Yeah, that is what mine does. It seems like it will run rich one flight and be lean the next time you start it. I'll have it running well on the ground, but it will die in flight when trying to transition off idle in the air.

Cleaned carb a couple times, and have tried different glow plugs. It just never runs the same one start to the next, and won't transition in the air w/o dying.

Mine's also about to find a place in the junk bin.