I have a problem with my bike. It usually pings a little bit(once or twice when It gets really hot) but the other day I went riding at about 35 degrees and there was some snow on the ground! Whenever I would be let off the gas or driving slow it would ping about every second or two! :yikes: It shouldn't because there was headwork done on the bike to stop the 490 from pinging. I am running 93 octane pump gas with octane booster. The clip is at the top, but it runs clean and doesn't ping once I open it up. I guess I should richen the air screw but it's really nice not to foul plugs... What should I do?