Ok so I recently replaced both intake boot on my 98 yamaha banshee. I pushed it out to start it and it fired up with choke on then died I turned the choke off and it fired right up. I revved it 2 time to about 1/4 throttle and on the second time it made a loud popping noise and revved to full throttle. I turned the key off and it shutdown. I pushed it back in the garage and pulled both carbs and intakes off I checked the reeds witch are stock reeds and cages and they are fine. I noticed that the left cylinder base gasket was wet so I pulled the cylinder and it didn't seal good. I'm going to replace the gaskets is there anything else that I should check. It's a 65.00 mm piston with a 4 mil stroker crank, stage 4 exhaust and not sure about the silencers but they look like they could be fmf but not sure. I don't have tores or parking brake, I have installed a teather kill switch. Any help is appreciated