Hi Guys,
a friend of mine has a Feibao SU 27 also. A few weeks ago we tried to make the maiden flight.
But it didn`t work well with the CG of Feibao of 8,5 Inch. It was tail heavy and was damaged during "Landing" (it was more like a Crash).
But it is repairable.
What CG are you using?
Best regards,
Karsten