Well I have actually done some thing to the SR, last week I walked passed the SR and nudged the passenger mirror, due to the cold weather/age it promptly broke and fell off
Plastic hinge just shattered
The result
Managed to remove the mirror base and have brought all the part into the house to let some spare mirrors warm up a little before selecting the best to fit, might make the replacement internally adjustable, debating to change the blue/grey covers over to the grey if I have a pair of good ones.