I am not a novice with dryers , however I am having an unusual problem , I have put a new belt on , it is fed correctly through jockey wheels , over one , under the motor arm and up and across the second wheel, the problem I'm having is that belt seems loose and won't turn , the wheels are positioned correctly , both wheels spin freely ,when I pull one of the wheels away it tightens up the belt and it freely runs on the other wheel , could the spring be too tight ? If this is the case how could this happen?