1.Profile plane, stiff nose, & engine very securely mount to minimize vibration
2.4oz chickenhopper tank with no leaks in the tank or fuel line. Tank was 1/4" above center line then moved to 1/8" above cl. Now at cl
3.fuel 10% nitro, 26% oil, tank solidly mounted, new Fox R/C plug
4.Enya 35 with only about 30% of its life left. Prop MA 10/5 Runs & needles fine upright.

Died inverted during lazy eight 1 week ago. Tank lowered 1/8 inch.

This week end bogged down during 8s & died inverted after slightly less than a lap. 

I lowered the tank to the center line for next weekend.

Anything else I should look at?        Learning to land inverted.

 

Try an RC plug. That simple change helped my Enya 35's to keep from dieing while inverted. The theory is as explained to me by some of the experts at the flying field is that the fuel is cooling the glo-plug. The shield of the RC plug diverts the fuel from directly splashing the fuel charge onto the element. A hotter plug might reslove this as well with the RC plug as my first choice. Air leaks in the tank have also caused this same issue to happen to me on my original kit Flite Streak causing lots of broken needle valves during those inverted landings on grass.

Another suggestion is to bladder pressure test your tank if possible and see if that gets any leaks to show especially if you've been landing inverted lately. Check and re-check for air-leaks paying close attention the pick-up and vent tube soldered areas.

Enyas like to run so find a good needle setting not too rich and change props until you get what you are looking for and let that puppy run! Your oil percentage would allow for leaner needle settings and the Enyas can handle running a bit on the lean side. I'd suggest starting with the 10-5 prop like you've mentioned you are presently using and then experiment from there. Maybe 9-6 or a 9-5???

Happy flyin' and I hope it works out.

Mike