diff --git a/core/src/mindustry/content/Blocks.java b/core/src/mindustry/content/Blocks.java
index bfa1f827f1..66e31bd5b5 100644
--- a/core/src/mindustry/content/Blocks.java
+++ b/core/src/mindustry/content/Blocks.java
@@ -4155,7 +4155,7 @@ public class Blocks{
         }};
 
         tankReconstructor = new Reconstructor("tank-reconstructor"){{
-            requirements(Category.units, with(Items.graphite, 250, Items.tungsten, 120, Items.silicon, 200));
+            requirements(Category.units, with(Items.graphite, 150, Items.tungsten, 150, Items.silicon, 250, Items.oxide, 60));
             regionSuffix = "-dark";
 
             size = 3;
@@ -4171,7 +4171,7 @@ public class Blocks{
         }};
 
         mechReconstructor = new Reconstructor("mech-reconstructor"){{
-            requirements(Category.units, with(Items.graphite, 250, Items.tungsten, 120, Items.silicon, 200));
+            requirements(Category.units, with(Items.beryllium, 250, Items.tungsten, 120, Items.silicon, 150, Items.oxide, 50));
             regionSuffix = "-dark";
 
             size = 3;
diff --git a/core/src/mindustry/content/ErekirTechTree.java b/core/src/mindustry/content/ErekirTechTree.java
index ee43190e96..cb5fd6a5fa 100644
--- a/core/src/mindustry/content/ErekirTechTree.java
+++ b/core/src/mindustry/content/ErekirTechTree.java
@@ -277,14 +277,14 @@ public class ErekirTechTree{
 
                 });
 
-                node(tankReconstructor, Seq.with(new OnSector(three)), () -> {
-                    node(UnitTypes.locus);
+                node(shipReconstructor, Seq.with(new OnSector(three)), () -> {
+                    node(UnitTypes.avert);
 
-                    node(shipReconstructor, Seq.with(new OnSector(three)), () -> {
-                        node(UnitTypes.avert);
+                    node(mechReconstructor, Seq.with(new OnSector(three)), () -> {
+                        node(UnitTypes.latum);
 
-                        node(mechReconstructor, () -> {
-                            node(UnitTypes.latum);
+                        node(tankReconstructor, () -> {
+                            node(UnitTypes.locus);
 
                             node(tankAssembler, Seq.with(new OnSector(three), new Research(constructor), new Research(atmosphericConcentrator)), () -> {
                                 node(UnitTypes.vanquish, () -> {