In summary the mirrors I will never not have there is no going back. It takes a little bit of cutting plastic to get the 90% cheaper eBay models to work but if you do like me and remove the holder from the car first to assemble you can figure out what you need to do.

I just levered out the whole mirror assembly then swapped over the replacement mirror and popped the assembly back on with the new mirror attached. It takes a fair amount of force. I think I took a video I'll see if I can find it.

I did make A photo album of the fix:

https://www.icloud.com/sharedalbum/#B0SGAfJVYJqgUUL

__________________
2011 E70 • N55 (me)
2012 E70 • N63 (wife)