R230 door mirror

Hi all,
I'm a new member seeking some help/advice:-

The passenger side door mirror generally folds out beyond the correct position, sometimes to the correct position.
Any solution suggestions?
Does the unit need dismantling for correction? If so, how do I remove the assembly from the car? (I have gone so far as removing the mirror glass, glass adjustment motor and the outer cover).How do I compress the large internal spring?

 

I've not heard of this personally, I have had the glass off on mine recently to fit a new glass on the drivers side, I would just have a ferret around in there and see if there is anything you can see, which it sounds like you are doing..

Good thing for spring compression is cable ties (metal if you have them). Not 100% sure how the mirror folding system works, there must be a motor somewhere ....