I had the motor apart and all looks well, put it back together and seal up the back plate. I think most of my problem was the taller 15 clutch gear versus the 13 tooth, the cold weather and not getting to operating temp while i was tuning. I can get it real close but it seemed to still be changing as it's breaking in, I have about a gallon and a half through it now. I think the problem was solved when I changed the gear, but when I did it, like an idiot I only put the inside bearing on the clutch bell gear and it was wobbling around hitting the big gear and engaging early on the clutch shoes. I discoverd this after I hit a brick wall and was tearing down for inspection. I also was reading on some tuning tips how factory clutch shoes/springs often engage early, so on the hellfire with no transmission and only one gear which would be a higher gear, this would compound the problem if in fact the clutch engages a bit early. I have the Werks Racing 4 shoe clutch on the way so I can tune it so my engine doesn't have to lug as much. Thanks again for all the help.