There is a sticky thread in the CRF450 forum that addresses a linkage mod to the AP. The thrust is that this mod noticeably improves engine response to a quick snap of the throttle. It eliminates the boggs and the results were overall favorable, even greater in the CRF250. As I viewed the threads and photos, I'm thinking that this looks alot like the carb on my 02, 426. We have a mild case of the boggs and am looking for a cure plus easy extras. I have not seen AP mods addressed in this forum, are there any. What say you?