HI,

My son is flying the solo star trainer from hangar 9 , i installed an evo trainer system for him on the plane. the problem is as follow:

The engine will transition from low to full throttle when on the ground .. ( Great) But
when holding the plan in a vertical position, if i transition from low to high the engine will die ..
I have tried everything but cant seem to get what is wrong and why is the transition on the ground is fine but when in a vertical position it would die.
If i made the transition slowly, it will run fine, otherwise not. Since this is a trainer, i want to make sure that the engine is running fine to avoid dead sticks and crashes, any suggestion is appreciated.

Thank you
Cheers
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