I have a 1978 2HP PUCH Maxi. It has been upgraded with a K-Star 70, kept the original 14mm Bing carb. Super Stuffy crank. Techno Boss pipe. And it's running great... until a few days ago. While rollin' at WOT it would start to choke and hesitate. So today I down jetted from a 74 to a 72. Tried B6HS and B7HS plugs. STILL getting the hesitation, and if I try to WOT through the hesitation it dies. Any ideas? I am in Omaha, NE and it's SUPER humid and muggy. Could it be the air? Should I try down jetting yet again to maybe a 68? Any suggestions would be most awesome! I'm new to peds since only January. Omaha's Kit Kats have been most helpful, but this has me stumped! (edited)