Hey guys I bought a new motor from bekits.com (second motor from them). I got it started up first time yesterday night and drove it about 3-4 minutes no problem (speed carb). Today I received an RT Carb from Dax. As I was putting in the new throttle cable I noticed that there was a small metal flake inside. No problem I take it out I give it a quick check for more flakes just find one more outside the carb. Then I put it in the motor and then tighten everything. I don't run it till about 3 hours later(took a nap). I go ride it and turns on runs nice and smooth 20 seconds later loud pop. It suddenly stops the bike from moving (I was going 13 mph GPS on my phone, always have it on when I ride). I pull in the clutch quick and prevent a possible fall. I then decide to turn it on again and it struggles to turn and doesn't idle if I pull in the clutch. I wait 2 minutes and try to turn it on again and works good a little weaker than before and it's riding as long as I'm giving it throttle. About 2 minutes later longer than before it pops not as loud and I pull the clutch in save myself I was going 16mph. I get home open the engine up and see the following (pictures): Question is what could have caused it was it the new RT carb with its flaking metal or what? When I opened it up one of the piston rings was broken in half. So frustrating since I waited a whole month and I bought a full kit just for the motor since he didn't have single motors for sale and he isn't selling PK80 motor parts alone for now. He as in (bekits). So what could have happened? I suspect the RT carb.