I have compression, spark and fuel so it should work normally. The compression is still the same as before. I checked the clutch, piston, cylinder, spark plug, exhaust and my carb but everything seems to be normal. The setup i have right now is 65cc Airsal, 15/15 Dellorto, 15mm manifold and a Tecno Bullet. I'm absolutely clueless on why it suddenly runs like shit. Please help me out here. Thanks!