loose mirrors

So now that I have my bike back on the road and riding it I am finding another maintenance issue. My right hand side mirror is pretty much useless at any speed above about 10mph, and the right is starting to get loose as well - it just takes about 30 minutes at 75mph to move out of acceptable...

I know a lot of you guys don't like the OE mirrors but I actually do. I can see behind me with them VS just looking at my elbows like my prior sport/sport touring bikes. My particular problem was not that the mirror head was loose but it was the entire shaft would rotate in the base. I would...