Barry,

I'm interested in responses to your question also. Last week, my G26 died twice while doing inverted flat spins, at about 1/3 throttle. I think I have an airflow problem over the velocity stack on the plane, because if I pull sudden, harsh, up or down movements with the plane, there is a momentary loss of power. I posted a question in the Gas Engine forum, but haven't had a chance to try anything yet.

Is your carb hanging outside the cowl, do you have a velocity stack?

Chuck