Loose mirrors?

Hi all just a quick one, I'm having a problem when I fold my mirrors in at night to put ya bike away, the next morning I take my bike out fold the mirrors back and what would you know there looser than a wizards sleeve so out comes trusty alum key to tighten them back in place. Is there anything I can do to prevent them coming loose? Thanks guys

I have same problem. the trick is not to move them, put your helmet on them, or bump into them.

I also got the top part of mirror where ball joint is all floopy, had to cut into plastic to tight bolt and its still slightly floopy =[

Could always buy a new one, they are bit stiffer

Duct tape?

probably not the best answer, but I found I could loosen or tighten the screw by the way I held the mirror when I moved it back & forth.

i.e I would hold the mirror stalk and apply some upwards pressure as I moved it and it would cause the mirror to grip the bolt slightly and tighten it in place as I moved it into position.