I tried with no luck to duplicate the problem on the ground. So I reset the regulator, LS, and HS adjustments and put a new glow plug in it. When I flew it yesterday, I didn't have the problem with flameout, but anytime the engine was in an inverted attitude during a manuever, the engine would bog down. There was a noticable loss of power and I could definitely hear the RPM drop. That happened on the ground as well as while airborne.

Any ideas?