Yeah, i notice how it does it when it touches the other piece, altought it has been doing it when it is in straight position also, i am going to try and straighten it this weekend because there is no one that can fix it in my country, at least that i know ofYep that needs to be completely disassembled and straitened. If you try to straighten it in place you will break something and and cause serious problems. More than likely its binding when you go past a certain amount of roll and it powers down. If you continue to allow it to bind you will burn up the motor controller or the main board. I have repaired 200+? this year alone.
Jeremy