i used to have a problem like this on my cart when i was young and i can remember it seemed to stop,but has returned to my bike this time.for some reason it keeps breaking the chain , i am concerned because its gold on gold rlv chain and we know what kind of stress that can take. its just the front chain {i would have thought the longer chain in the rear would break first more weak points but no} . ive checked the alignment and all seems to be well only thing i can think of is masterlinks wore out , but i give them a good check before i use them especially the clips . i got a masterlink from OldMiniBikes that doesnt use clips instead it uses a wire that runs thru the posts securing the coverlink on . if you can get the wire right these work very well , i just hope it solves my prob i wanna ride xD.