Ya I mean I'm not tossing great compression numbers but could be alot worst when I get bored I may order that top end kit I was mentioning, but way it sits piston is clean as heck, cylinder appears to have minor scoring but with its age its also expected. I'll clean it up bit by bit probably be the last 2 saws i buy unless find a good deal on a 440 or 660 which i really absolutely do not need but ... bigger is always better even if you use it only for bragging rights 😂 around my area this 038 is more then enough for someone like myself