Just brought a Cateye bar end mirror for Mrs TKK's Brommie. She caught it when putting it under her desk and the mirror popped out of the movable stem. It's a press fit ball and socket joint but it wont go back in. I tried everything, mirror socket part heated in hot water while the ball part was in the freezer, all to no avail.
Update:
I found the Cateye BM 45 in stock at Tredz for around the same price as Amazon so ordered a couple as one of the Brommies doesn't have one. I was sitting at the table and looking at the one that popped apart, the offset hole and the corresponding ball and trying to discover if the was an optimum " angle of attachment " I had a bit of a brainwave and lay the mirror face down with the ball joint resting on the hole. I found a very large pair of scissors and lay the centre of the closed blade at the back of the ball joint and applied my whole weight. It took a great deal of effort but there was a loud snap and the unit was once more together.
Very pleased that I finally got it reconnected and now we have a spare.