I'm running a 48 on a pipe at 13.5k turning a 10x7, and it's blown 3 enya #3 in the last 5 flights, and im scratchin my head. It ran fine before, then I didnt fly for 10 months(never normally a problem) but still put fuel through to keep it alive. then after i land, it doesnt start.

Will going up a prop or two and bringing the revs down help? Or do i just forget it and fly something else?
Thanks