So I finally gave up on this motor and decided to rebuild it. It was running great for almost a year and then just decided to start acting up. I noticed a busted motor mount and that I could turn the flywheel by hand all the way around without a lot of resistance. So I am thinking I just didn't have the compression I needed to keep it running right any longer. With that being said... I have the motor tore all apart and wondering if I need to replace the bearings on the inside of the motor. I plan on replacing the piston/sleeve and o-rings. The carbertor looks pretty beat up, but I think I can clean it up pretty good. Do you guys recommend replacing anything else while I have this thing tore all apart? Here are some photo's of the motor, it actually looked pretty good I thought on the inside. Not sure why it started acting all wonky. Any advice/comments are appreciated.