I have a 02 YZ426 and I am having probs with the idol running. It starts fine runs great but I have to have the fuel screw out around 3-4 turns to make it not pop after decel. It also won't drop to idol after blips. Stock jetting, clean carb, blue wire, fmf head pipe with stock cannister, no lid airbox. I'm thinking of going from a 42 pilot to a ada0 or 55 (I think this circut is too lean). I've owner it for about 6 mths and its always had this prob. Any guesses? Thanks in advance!