diff --git a/Commands.js b/Commands.js
index 7ea600d..0b5a22c 100644
--- a/Commands.js
+++ b/Commands.js
@@ -49,7 +49,7 @@ function buildRoads(){
             sId => {
                 const source = Game.getObjectById(sId);
                 var roads = [];
-                roads = roads.concat(source.pos.findPathTo(this.controller));
+                roads = roads.concat(source.pos.findPathTo(room.controller));
                 roads.pop();
                 roads = roads.concat(source.pos.findPathTo(room.find(FIND_MY_STRUCTURES, { filter:{ structureType:STRUCTURE_SPAWN }})[0]));
                 roads.pop();
diff --git a/RoomClass.js b/RoomClass.js
index 2ff017b..b7766d5 100644
--- a/RoomClass.js
+++ b/RoomClass.js
@@ -29,11 +29,16 @@ function jobScan(room){
 
 function vacancyScan(room){
 	const activeJobs = room.find(FIND_MY_CREEPS).map(creep=>creep.memory.job);
-	const jobs = [].concat(room.memory.jobs);
-	activeJobs.forEach(job => {
-		const index = jobs.indexOf(job);
-		if(0 <= index) jobs.splice(index,1);
+	console.log(activeJobs.toString());
+	console.log(room.memory.jobs.toString());
+	const jobs = room.memory.jobs.filter((j)=>{
+		const index = activeJobs.findIndex(aj=> _.isEqual(aj,j));
+		if(index < 0) return true;
+		activeJobs.splice(index,1);
+		return false;
 	});
+	console.log(jobs.toString());
+
 	room.memory.vacancies = jobs;
 }
 
diff --git a/StructureSpawnClass.js b/StructureSpawnClass.js
index 99bd4e9..f1976b0 100644
--- a/StructureSpawnClass.js
+++ b/StructureSpawnClass.js
@@ -9,7 +9,8 @@ class _StructureSpawn extends StructureSpawn {
     }
     
     tick(){
-		if(!this.memory.init) this.begin(); 
+		if(!this.memory.init) this.begin();
+		if(this.store.getUsedCapacity(RESOURCE_ENERGY) < 300) return; 
 		const job = this.room.memory.vacancies.pop();
 		if(job){
 			const name = getJobName(job.role);