thank you! how much clearance on the accelerator pump arm? i never touched it outta the box. just set floats. idle mixture by vacume and then curb idle. then i jetted the carb down 2 sizes all way around. it did pop once a little while back up thru the carb when it was cold starting. might have popped the power valve. it did kinda feel like it was loading up a bit now that you mention it.