Just got a new MCX tandem and control test function as described in the manual, but helicopter is not stable at all. I have adjusted trims to the max and heli spins to right and backwards no matter what I do. I have to hold rudder full right and elevator to attempt to fly straight. Any ideas or suggestions. Forgive me I'm just a newbie. I am using a DX5e radio and have no problems with my other MCX2 or MCX original.