I clutched my viper with slp pipes and it will go to 8900 rpm and drop to 8200 and not climb back up. this is what i have 8bu-10weights with 4.5 tip 3.1 center with gwg primary. 49/41 with green secondary wraped at 70degrees. Rest of the sled is stock. Ihave 160maines for jetting, power valves are clean and adjusted to proper specs. any ideas?