My gimbal arm needs a tweak. See the play between(two arrows) the motor and where it attached to the potentiometer casing. If I push that back so it is flush/tight the 'gimbal obstruction error' clears and the camera goes through it's check cycle normally .... but it is only being held by gravity and if it slips to the position that it is shown in .... then there is too much resistance on the motor. Also the back of the camera is slightly rubbing on the outer edge of the black ribbon wire as it pans downwards. I think it needs a slight tweak in two directions ... the question is which way and what arm to tweak because by eyeballing it I can't detect any bend at all in any direction ... it all looks straight as an arrow. If somebody could post a similar angled photo of the normal space between the back of the camera and ribbon cable and also how flush/tight the motor is normally against the back of the potentiometer case ...... it would be a big help and for starters.