Ok fellas, I've got it solved!!!! A check valve is the answer!! I tried several. I was about to give up when I ran across this filter primer setup for an Ofna!! I was skeptical but had to try. I mounted the filter and took it out for a tuning session. With alitttle leaning on the high speed side and less leaning on the low side, this thing no longer flames out at half tank. And it idles forever without heating up. Woot Woot!!!

Oh yeah cant forget the addition runtime...gotta get numbers for ya...