diff --git a/flake.nix b/flake.nix
index 1ee1ae0..a7d1c5d 100644
--- a/flake.nix
+++ b/flake.nix
@@ -75,7 +75,7 @@
         modules = [
           # Apply the overlay first so pkgs in later modules (like our local
           # `minecraft.nix`) see the extra helpers provided by the overlay
-          {nixpkgs.overlays = [inputs.nix-minecraft.overlay];}
+          { nixpkgs.overlays = [ inputs.nix-minecraft.overlay ]; }
 
           nix-minecraft.nixosModules.minecraft-servers
 
diff --git a/nix-system-configs/modules/system/minecraft.nix b/nix-system-configs/modules/system/minecraft.nix
index c120017..743bded 100644
--- a/nix-system-configs/modules/system/minecraft.nix
+++ b/nix-system-configs/modules/system/minecraft.nix
@@ -10,7 +10,7 @@
   # Try to use the nix-minecraft helper if the overlay is present; otherwise
   # fall back to a local path. If you use the fallback, ensure the path is an
   # unpacked modpack directory with `mods` and `config` subdirectories.
-  modpack = /srv/minecraft/modpacks/atm10;
+  modpack = /srv/minecraft/modpacks/AllTheMods10-prg.mrpack;
 in {
   options.local = {
     hostname = lib.mkOption {
@@ -70,7 +70,7 @@ in {
       eula = true;
       openFirewall = true;
 
-      servers.all-the-mods-tss = {
+      servers.all-the-mods-ten-tss = {
         enable = true;
         autoStart = true;
         restart = "always";
@@ -78,26 +78,8 @@ in {
         package = pkgs.neoforgeServers.neoforge-1_21_1-21_1_224;
 
         jvmOpts = lib.concatStringsSep " " [
-          "-Xms4G"
+          "-Xms18G"
           "-Xmx45G"
-          "-XX:+UseG1GC"
-          "-XX:+ParallelRefProcEnabled"
-          "-XX:MaxGCPauseMillis=200"
-          "-XX:+UnlockExperimentalVMOptions"
-          "-XX:+DisableExplicitGC"
-          "-XX:+AlwaysPreTouch"
-          "-XX:G1NewSizePercent=30"
-          "-XX:G1MaxNewSizePercent=40"
-          "-XX:G1HeapRegionSize=8M"
-          "-XX:G1ReservePercent=20"
-          "-XX:G1HeapWastePercent=5"
-          "-XX:G1MixedGCCountTarget=4"
-          "-XX:InitiatingHeapOccupancyPercent=15"
-          "-XX:G1MixedGCLiveThresholdPercent=90"
-          "-XX:G1RSetUpdatingPauseTimePercent=5"
-          "-XX:SurvivorRatio=32"
-          "-XX:+PerfDisableSharedMem"
-          "-XX:MaxTenuringThreshold=1"
         ];
 
         serverProperties = {
@@ -115,57 +97,7 @@ in {
           enable-command-block = false;
           enable-rcon = false;
           require-resource-pack = false;
-          level-type = "minecraft:amplified";
           level-seed = "-2032795982907864146";
-
-          # Added properties (do not overwrite existing ones above)
-          accepts-transfers = false;
-          allow-flight = true;
-          allow-nether = true;
-          broadcast-console-to-ops = true;
-          broadcast-rcon-to-ops = true;
-          bug-report-link = "";
-          enable-jmx-monitoring = false;
-          enable-query = false;
-          enable-status = true;
-          enforce-whitelist = false;
-          entity-broadcast-range-percentage = 100;
-          force-gamemode = false;
-          function-permission-level = 2;
-          generate-structures = true;
-          hardcore = false;
-          hide-online-players = false;
-          initial-disabled-packs = "";
-          initial-enabled-packs = "vanilla";
-          level-name = "world";
-          log-ips = true;
-          max-chained-neighbor-updates = 1000000;
-          max-tick-time = 180000;
-          max-world-size = 29999984;
-          network-compression-threshold = 256;
-          op-permission-level = 4;
-          player-idle-timeout = 0;
-          prevent-proxy-connections = false;
-          pvp = true;
-          # dotted keys must be quoted
-          "query.port" = 25566;
-          rate-limit = 0;
-          "rcon.password" = "";
-          "rcon.port" = 25575;
-          region-file-compression = "deflate";
-          resource-pack = "";
-          resource-pack-id = "";
-          resource-pack-prompt = "";
-          resource-pack-sha1 = "";
-          server-ip = "";
-          spawn-animals = true;
-          spawn-monsters = true;
-          spawn-npcs = true;
-          sync-chunk-writes = true;
-          text-filtering-config = "";
-          use-native-transport = true;
-          # white-list, view-distance, simulation-distance, spawn-protection, etc.
-          # were kept above to avoid overwriting existing values.
         };
 
         # Grant operator privileges to the user with the given UUID.
@@ -178,20 +110,34 @@ in {
           };
         };
 
-        symlinks = {
-          "mods" = "${modpack}/mods";
-          "datapacks" = "${modpack}/datapacks";
-          "user_jvm_args.txt" = "${modpack}/user_jvm_args.txt";
-        };
-        files = {
-          "config" = "${modpack}/config";
-          "patchouli_books" = "${modpack}/patchouli_books";
-          "defaultconfigs" = "${modpack}/defaultconfigs";
-          "kubejs" = "${modpack}/kubejs";
-          "local" = "${modpack}/local";
-          ".mixin.out" = "${modpack}/.mixin.out";
-          "dynamic-data-pack-cache" = "${modpack}/dynamic-data-pack-cache";
-        };
+        #symlinks = {
+        #  "mods" = "${modpack}/overrides/mods";
+        #  "moddata" = "${modpack}/overrides/moddata";
+        #  "resourcepacks" = "${modpack}/overrides/resourcepacks";
+        #  "shaderpacks" = "${modpack}/overrides/shaderpacks";
+        #  "dynamic-resource-pack-cache" = "${modpack}/overrides/dynamic-resource-pack-cache";
+        #  "dynamic-data-pack-cache" = "${modpack}/overrides/dynamic-data-pack-cache";
+        #};
+        #files = {
+        #  "backup" = "${modpack}/overrides/backup";
+        #  "blueprints" = "${modpack}/overrides/blueprints";
+        #  "command_history.txt" = "${modpack}/overrides/command_history.txt";
+        #  "config" = "${modpack}/overrides/config";
+        #  "datapacks" = "${modpack}/overrides/datapacks";
+        #  "downloads" = "${modpack}/overrides/downloads";
+        #  "ESM" = "${modpack}/overrides/ESM";
+        #  "eula.txt" = "${modpack}/overrides/eula.txt";
+        #  "fancymenu_data" = "${modpack}/overrides/fancymenu_data";
+        #  "journeymap" = "${modpack}/overrides/journeymap";
+        #  "kubejs" = "${modpack}/overrides/kubejs";
+        #  "manifest.json" = "${modpack}/overrides/manifest.json";
+        #  "minecraftinstance.json" = "${modpack}/overrides/minecraftinstance.json";
+        #  "observable_announce" = "${modpack}/overrides/observable_announce";
+        #  "options.txt" = "${modpack}/overrides/options.txt";
+        #  "patchouli_books" = "${modpack}/overrides/patchouli_books";
+        #  "patchouli_data.json" = "${modpack}/overrides/patchouli_data.json";
+        #  "schematics" = "${modpack}/overrides/schematics";
+        #};
       };
 
       servers.fabric-modded = {
@@ -489,32 +435,10 @@ in {
       };
     };
 
-    # For FastBackup and to force OpenJDK 21 for the Minecraft services,
-    # set JAVA_HOME and include the OpenJDK bin in the service environment.
-    # Add matching environment for both server units created by nix-minecraft.
+    # For FastBackup force etc to have PATH
     systemd.services."minecraft-server-fabric-modded".environment = {
-      JAVA_HOME = lib.mkForce "${pkgs.openjdk21}";
       PATH = lib.mkForce (
         lib.makeBinPath [
-          pkgs.openjdk21
-          pkgs.git
-          pkgs.git-lfs
-          pkgs.coreutils
-          pkgs.findutils
-          pkgs.gnugrep
-          pkgs.gnused
-          pkgs.systemd
-        ]
-        + ":/run/current-system/sw/bin"
-      );
-    };
-
-    # Ensure the other server unit also uses OpenJDK 21
-    systemd.services."minecraft-server-all-the-mods-tss".environment = {
-      JAVA_HOME = lib.mkForce "${pkgs.openjdk21}";
-      PATH = lib.mkForce (
-        lib.makeBinPath [
-          pkgs.openjdk21
           pkgs.git
           pkgs.git-lfs
           pkgs.coreutils