I normally turn the transmitter on first but this doesn't change the situation

I swapped the aileron and elevator over on the board the the aileron servo continued to jitter indicating it was the servo. i cleaned the pot up in the servo but this only helped for a short amount of time.

the tail motor also spins up without command.

Could it be interference? Aircraft and choppers in Australia operate on 36Mhz, and i'm on 35Mhz at the moment.