diff --git a/core/src/mindustry/content/Blocks.java b/core/src/mindustry/content/Blocks.java
index 27a963dae3..652edbb2bb 100644
--- a/core/src/mindustry/content/Blocks.java
+++ b/core/src/mindustry/content/Blocks.java
@@ -3575,6 +3575,7 @@ public class Blocks{
             deconstructSpeed = 1f;
         }};
 
+        //TODO consider usefulness and applicability to serpulo
         deconstructor = new PayloadDeconstructor("deconstructor"){{
             requirements(Category.units, with(Items.thorium, 250, Items.silicon, 200, Items.graphite, 250));
             itemCapacity = 250;
@@ -3583,8 +3584,9 @@ public class Blocks{
             deconstructSpeed = 2f;
         }};
 
+        //TODO move completely to erekir tech tree?
         constructor = new Constructor("constructor"){{
-            requirements(Category.units, with(Items.silicon, 50, Items.thorium, 70, Items.graphite, 50));
+            requirements(Category.units, with(Items.silicon, 80, Items.graphite, 120));
             hasPower = true;
             consumes.power(2f);
             size = 3;
@@ -3592,7 +3594,7 @@ public class Blocks{
 
         //yes this block is pretty much useless
         largeConstructor = new Constructor("large-constructor"){{
-            requirements(Category.units, with(Items.silicon, 100, Items.thorium, 150, Items.graphite, 50, Items.phaseFabric, 40));
+            requirements(Category.units, with(Items.silicon, 150, Items.graphite, 150, Items.phaseFabric, 40));
             hasPower = true;
             consumes.power(2f);
             maxBlockSize = 4;
diff --git a/core/src/mindustry/logic/LExecutor.java b/core/src/mindustry/logic/LExecutor.java
index 6173ab0aa8..fe60691af9 100644
--- a/core/src/mindustry/logic/LExecutor.java
+++ b/core/src/mindustry/logic/LExecutor.java
@@ -1157,11 +1157,11 @@ public class LExecutor{
         }
     }
 
-    public static class SpawnUniI implements LInstruction{
+    public static class SpawnUnitI implements LInstruction{
         public int type, x, y, rotation, team, result;
         public boolean effect;
 
-        public SpawnUniI(int type, int x, int y, int rotation, int team, boolean effect, int result){
+        public SpawnUnitI(int type, int x, int y, int rotation, int team, boolean effect, int result){
             this.type = type;
             this.x = x;
             this.y = y;
@@ -1171,7 +1171,7 @@ public class LExecutor{
             this.result = result;
         }
 
-        public SpawnUniI(){
+        public SpawnUnitI(){
         }
 
         @Override
diff --git a/core/src/mindustry/logic/LStatements.java b/core/src/mindustry/logic/LStatements.java
index 55f496d9a0..dd9c55a839 100644
--- a/core/src/mindustry/logic/LStatements.java
+++ b/core/src/mindustry/logic/LStatements.java
@@ -1202,7 +1202,7 @@ public class LStatements{
 
         @Override
         public LInstruction build(LAssembler builder){
-            return new SpawnUniI(builder.var(type), builder.var(x), builder.var(y), builder.var(rotation), builder.var(team), effect, builder.var(result));
+            return new SpawnUnitI(builder.var(type), builder.var(x), builder.var(y), builder.var(rotation), builder.var(team), effect, builder.var(result));
         }
     }
 }
diff --git a/core/src/mindustry/world/blocks/units/DroneCenter.java b/core/src/mindustry/world/blocks/units/DroneCenter.java
index ab83c588de..6ef14d2441 100644
--- a/core/src/mindustry/world/blocks/units/DroneCenter.java
+++ b/core/src/mindustry/world/blocks/units/DroneCenter.java
@@ -141,8 +141,7 @@ public class DroneCenter extends Block{
         }
     }
 
-    public static class EffectDroneAI extends AIController{
-        //TODO non static?
+    public class EffectDroneAI extends AIController{
 
         @Override
         public void updateUnit(){
@@ -150,18 +149,16 @@ public class DroneCenter extends Block{
             if(!(tether.building() instanceof DroneCenterBuild build)) return;
             if(build.target == null) return;
 
-            DroneCenter block = (DroneCenter)build.block;
-
             target = build.target;
 
             //TODO what angle?
-            moveTo(target, build.target.hitSize / 1.8f + block.droneRange - 10f);
+            moveTo(target, build.target.hitSize / 1.8f + droneRange - 10f);
 
             unit.lookAt(target);
 
             //TODO low power? status effects may not be the best way to do this...
-            if(unit.within(target, block.droneRange + build.target.hitSize)){
-                build.target.apply(block.status, block.statusDuration);
+            if(unit.within(target, droneRange + build.target.hitSize)){
+                build.target.apply(status, statusDuration);
             }
         }
     }
diff --git a/gradle.properties b/gradle.properties
index c1026ffafd..595e0e34dd 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -24,4 +24,4 @@ android.useAndroidX=true
 #used for slow jitpack builds; TODO see if this actually works
 org.gradle.internal.http.socketTimeout=100000
 org.gradle.internal.http.connectionTimeout=100000
-archash=15cbd2710c
+archash=5babd5fc94