Just curious if anyone feels a difference between the stock air filter and an aftermarket one. Also what jet's did you richen when you switched? I switched from stock to a twin air, now when ever I blip the throttle from closed to half throttle it bogs. When I put the choke on it fixes the problem, but I don't know which jets to richen up. P.S. I thought I had the carb figured out and that the problem must have been my ignition, but obviously I was wrong.