You are right. I have also problem with graupner (JR) 5077 servos. When i turn on the transmitter servos go to the one side and then jump back.

This is not big problem for me, because my servos don't go over limit. But may be problem in some planes when servo go over limit.

Futaba really need to fix that. I will be happy to send back my receivers to be fixed for that.

Futaba have great system, but they should improve it to be perfect system.