Feel like a Dummy-I'm new to blue, always had Honda in the past. How the heck do you adjust the Pilot Screw on a WR426/01. I looked in my owner's book and it looks like you need to remove the top of the carb. to get at it. Want to adjust the air/fuel mix and can't belive need to take the top off. Still have a POP when I let off the throttle and want to try adjusting to maybe solve the problem.