HelmanRacingEngines

Crank seal on clutch side could be leaking or leeking pressure betwean cases on trans side. Just a conple things to check.

The forged should take the wiseco rings.

The new sleeve is not as thick as the top is the whole way down. If it was a stock bore sleeve it you don't eaven cut all the original sleeve out. My trail bike has one sleeved cyl and the other stock and no heating problems.

Your cylinder sounds correct by what your saying it looks like. The one you had sleeved is going to be bigger on the top that's the counter bore. The stock sleeve is casted in the cylinder where the new one uses the counter bore to keep it from falling down your cylinder. If the shop had cut that off there would have been nothing to hold it in place. Your studs should be ok if you put a big bore sleeve in the counter bore will touch the studs and and they work ok.