Just got my first Blue Machine. I LOVE It! But...I have noticed it "popping" when riding steady (no throttle) in just about any gear. The guy I bought it from added a power tip and increased the main jet a size or two and the pilot jet one size. I think it is running a bit lean. I notice the backfire now and then on deceleration also. I want to move the needle clip down one position...but this carb looks different than what I'm used to one the Honda 's. Before I tear into it.. does anyone know if it takes any special tools specific for this type of carb? Also, anyone have the procedure down to just move the needle clip? I searched the archives but didn't really see anything. Thanks for the help.