When i bought my 85 lt the guy told me the motor and swing arm was rebuilt. I rode it for 2 10 minite rides before it melted down due to a bad crank seal. Even if the crank seal would have been good the carb was jetted lean enough to get t he job done and the counter balancer was off by 2 teeth so she would have shook herself to death. Also there wasn't one good bearing in the swing arm the front ones weren't even in right.   I had all new bearings put in motor as well as new rod, piston, and seals. I rebuilt the swing arm and carb and new carb boot and boysen reed while my engine builder worked his magic. Its fast and fun and turns a lot of heads. I should have posted on here that i was looking for a good case before i sent mine to be welded but i been looking elsewhere for 3 months and all i have turned up that had a case saver still on it was around $400 and in need of a rebuild.  It was cheaper and done right the route i took. If i need anything in the future I'll pm you.