I fried my 4-in-one a while ago. Since I have another cx and 2 cx2s I was just gonna write it off and used parts for the other machines. Now I decided I want to rebuild it so I bought everything except servos and motor new, including the 4-in-one. After getting it together one of the servos wasn't working. Replaced it. All ready to go and I sit it on the floor, throttle up and it just sits there and spins clockwise on it's axis. OK so maybe there's a bad motor. I went this far so I replaced both motors. No amount of trim or turning of the proportional screw has any effect. I know the motors are plugged in correctly because the blades spin exactly like they do on the 3 heli's that fly. Just for kicks though I reversed the motor connections and VIOLA no spin. unfortunately no take off either. I picked up the little guy and throttle up and it wanted to go down. So I put the connections back the right way. Replaced the inner and out shafts again and checked for any binding or gear teeth problems or any other looseness. (It's not the first time I've replaced parts by a long shot).
Please any suggestions to solve this spinning problem?