Well i was having a problem with a jerking almost teeth jumping feeling. found out half the teeth on my rear sprocket were shaved almost all the way off. and on top of it the chain was a lil to loose(thanks to some fellow members here) i put a 41 back on, modded the swinger some, and it fits perfect with spot on chain slack and i took her out today with the ol lady and it doesnt do it anymore and she loves riding on the shee. so i figured id share incase anyone ever has this problem then thats what id check first. thanks again to the ones who helped. il put up a pic of the rear sprocket later