diff --git a/core/src/mindustry/content/ErekirTechTree.java b/core/src/mindustry/content/ErekirTechTree.java
index df75d9ab95..9137b56f56 100644
--- a/core/src/mindustry/content/ErekirTechTree.java
+++ b/core/src/mindustry/content/ErekirTechTree.java
@@ -114,7 +114,7 @@ public class ErekirTechTree{
                         });
 
                         node(constructor, Seq.with(new OnSector(split)), () -> {
-                            node(smallDeconstructor, () -> {
+                            node(smallDeconstructor, Seq.with(tmpNever), () -> {
                                 node(largeConstructor, () -> {
 
                                 });
@@ -135,7 +135,7 @@ public class ErekirTechTree{
             //TODO move into turbine condenser?
             node(plasmaBore, () -> {
                 node(impactDrill, Seq.with(new OnSector(aegis)), () -> {
-                    node(largePlasmaBore, Seq.with(new OnSector(basin)), () -> {
+                    node(largePlasmaBore, Seq.with(tmpNever), () -> {
                         node(eruptionDrill, () -> {
 
                         });
@@ -153,12 +153,12 @@ public class ErekirTechTree{
                         });
                     });
 
-                    node(beamTower, Seq.with(new OnSector(basin)), () -> {
+                    node(beamTower, Seq.with(tmpNever), () -> {
 
                     });
 
 
-                    node(regenProjector, () -> {
+                    node(regenProjector, Seq.with(tmpNever), () -> {
                         //TODO more tiers of build tower or "support" structures like overdrive projectors
                         node(buildTower, Seq.with(new OnSector(basin)), () -> {
                             node(shockwaveTower, () -> {
@@ -193,7 +193,7 @@ public class ErekirTechTree{
                     node(siliconArcFurnace, () -> {
                         node(electrolyzer, Seq.with(new OnSector(atlas)), () -> {
                             node(oxidationChamber, Seq.with(new Research(tankRefabricator), new OnSector(marsh)), () -> {
-                                node(electricHeater, Seq.with(new OnSector(marsh)), () -> {
+                                node(electricHeater, Seq.with(tmpNever), () -> {
                                     node(heatRedirector, () -> {
                                         node(surgeCrucible, () -> {
 
@@ -288,7 +288,7 @@ public class ErekirTechTree{
             node(tankFabricator, Seq.with(new Research(siliconArcFurnace), new Research(plasmaBore), new Research(turbineCondenser)), () -> {
                 node(UnitTypes.stell);
 
-                node(unitRepairTower, Seq.with(new OnSector(basin), new Research(mechRefabricator)), () -> {
+                node(unitRepairTower, Seq.with(tmpNever, new Research(mechRefabricator)), () -> {
 
                 });