I have a 93XR650L. I was riding it on the street today when the engine just seized bad enough to cause the chain to snap. No prior warning, engine noise, nothing. Just wump and there goes the chain. Oil is good and engine was running fine up until it just locked up. Anyone want to take an educated guess what the problem is, tranny, clutch, whatever. I haven't started to tear into it yet but it doesn't sound like the piston seized, more like something just broke inside the cases and locked up. Anyone have this happen before?? All educated guesses and not so educated guesses welcome.