I have a 2011 Road King FLHR 95" We just put true duals on, S and S stealth breather, TW 777 cams, lifters, push rods, and a Dynajet tune. Went out and rode and had a bad miss/cough/surger around 3000 rpm. Found that we had the O2 sensors backwards. We switched them ans things run better but tere ia srill a miss/surge between 3000 and 4000 rpm. Not as bad as previois bit still noticeable. Anyone have any ideas as to what may be our issue?