I wasnt saying the not gapping the plug is your issue but its a question that no one asked yet and it does matter. IMO it needs more fuel, more than a couple times weve seen bikes chase all sorts of issues thinking its electrical or clogged or some how messed up carbs. swap their .120 dump tube carbs out to a set with .125 and the bike goes up and down the track. This would be on 465-535 and whatever a 14 mini twister is.