So had an old warrior sitting and decided to get it running. Bought new carb, cylinder and piston kit of Amazon (I know I should have bought a name brand) Put everything back together and ran great for a week or so. After that I noticed it started to lose power and didn’t want to run after the engine got hot. Maybe 5 mins of run time. Everything else seemed totally fine. Finally I lost compression all at once. Was only getting 30 psi. I thought maybe a bad ring or something so it took it apart again and everything looking fine. Seems like the piston still has a pretty good seal when inspecting it. Not sure where to go now. I don’t want to waste more money trying to buy another cylinder kit. Could it be the valves maybe? Or is there a way to bench test this cylinder kit. What am I missing? Any help is much appreciated.