Ok iam now building my new echo and when my backwheel is on and set up the freewheel is not lined up with the spocket so when the back wheel turns the chain crunch on the sproket ? Can the bb not be in enought ? Edit: So the anwser to my problem was to put a spacer between the freewheel and the crank but my friend told me not to because i would strip the threads, so I had to buy a pair of new cranks. I got monty cranks which a really good I would prefer not to change them and spend the least money possible. Is there any other way i could line up my chain with my sproket ?!? Thanks