I took my carb to my buddy who is a Yamaha mechanic. He blew it out. I put new jets in... new throttle cable and slapped it back in. 2 turns out on the fuel screw. The bike won't idle right. Pops like crazy. No, it is not lean. 40/162. We checked the carb again... perfect. No leaks in the pipe. The grey wire is not grounding. The CDI is good. The woodruff key is ok. Changed the plug. Fresh gas. Could this popping be the plug wire maybe? You jazz on this thing and decel sounds like a misfiring machine gun. HOLY SMOKES.