It has 3 full tanks through it on the ground as setup, perfectly running. It isn't until I take it in the air that I have the isue with quitting.

I have gotten 5 and 10% fuel, a 10.5x6, and 10x7 props, a tachometer and a #8, A3 and A5 glow plug to try out.

Hopefully it'll run cooler with those options and solve the problem.

I should have mentioned it is 92 degrees in Houston and the first full tank went through it without the quitting, but all subsequent flights suffered the quitting.