Originally Posted by
jeffie8696
I would suspect a fuel tank issue
This is the first thing I thought too, when I started having engine issues flying inverted. The tank sits level with the carb. Moreover, it worked fine for a long time.
Anyway, I reseated the tank, and rerouted the fuel line to avoid a possible kink in the line. But that did not fix it.
I will try to pressure test the system to ~ 10psi to check for leaks. I still think the problem is with the LSN. Years ago I had a glow heli with a TT engine and remember that slightly changing the taper of the LSN
made tuning much easier... Chinese carbs can be a PITA.