I have change remote control settings from mode 2 to custom. One thing I notice after this is that manual start up procedure (CSC) with sticks don't work and only with auto take off can fly bird .
I change back to mode 2 and it works normally . Does anybody knows if this is application bug and can do anything to work CSC stat up with RC custom mode ?
cards

Depends on how you set up your custom radio. Whatever you changed will effect where the CSC is now

try RC calibrate after custom mode setup.

i just replace yaw to operate with riight stick and roll with left. I will try RC calibration to see if this will work....

In case anyone interested , I solve this . CSC start motor with my custom settings is now made placing both sticks down and right