The elevation will hurt you too. With no work to stop detonation, I use 8.25 as a maximum for the pump fuel we have here. I'm at sea level, and have 10% ethanol fuel. You could advance the cam to help, but I think something smaller, or a jump of 3/4 pt of static will help. Play with the closing point by reducing the figure by 4 or 8°. Whatdoes that do for it?