1/16 e-revo servo centering problems
 

hello forum people! so i just got my revo back from hobbytownusa getting the bulkhead replaced from a crash, didn't even know it was broken till i couldnt drive it straight. so its fixed and now servo still wont center correctly unless i put the trim all the way to the left. gears inside servo are fine and all the arms and tires are fine, something is telling this thing that shooting it way right is center. how do i fix this?