Thanks guys. Thats the last time I install a radio and enjoy somewine at the same time !
Completely forgot about the low update rate on channels 9 +10. Now slaving channel 8, aux 3, to elevator , result : perfection. On my F4 I have used channel 9 for gyro gain and 10 for brakes slaved to down elevator, will use the same for the BobCat. For rudder on the BobCat I will use one channel y leaded and modified by the rate gyroand slave channel 7 to rudder to drive nosewheel steering to allow fine adjustment electronically. Should work !Again, many thanks.