[Tom Goldman]

Could the problem be in your #? .....Div. 5 tracks can be pretty high in altitude if memory serves correctly = less HP ........converter slippage can make you nuts ,my current converter has 10% slippage @7600rpm and I still run 162. .....same engine with a 9" @4% slip 160 @ 7200, it never let the motor get up in its power band.....................sounds like you need some more dective work.................Tom