Got a map from Dynojet that works quite well except I get a big decel pop between 2700 and 2900 when I let off the throttle. This only happens when the bike has been ridden for 15 or 20 minutes. Up until then there is no popping in that rpm range. Anyone have any ideas what might be happening? I can't seem to tune out the big bang. I have replaced exhaust gaskets and the efi carb gasket between carb and air cleaner back plate as well. Thanks for your thoughts.