I was launching a small dinghy boat and trailer, reversed trailer and released boat, and then changed to 1st gear to go forward.I get maybe a metre and feel something snap and the bike doesn't want to move in any gear (beach is soft with little pebbles). I get it home and test every gear with bike off and it seems like its stuck in neutral. Looking on google it seemed like a chain slipped off in clutch housing so I inspected it and seems like the chain, clutch and centrifugal clutch are algood (don't really know what im looking at but bearings are algood, one-way bearing algood). now im thinking maybe and axle or universal? any advice?