RE: when to replace the sleeve and piston?
This one still has the resistance and there is no scoring, but I have to heat the crap out of the engine with a heat gun or it will just free spin when I hit the EZ start as if it were flooded, but it's not.
It's an older engine (trx .15) that I resurrected from the dead. It runs great once it's started but takes forever to start.