So after hours of trying to install the side stand properly, I finally just slapped it on and I am calling it "adequate". The problem was the o-rings. Trying to keep them on the mount without them rolling off was impossible. So I ended up just slipping them onto the bolt in the grooves and screwed it together.
I guess I could have carved a groove on each side of the mount so they'd stay in place while I put it together, but I'll save that for some other day.
Otherwise, it works fine. Anyone foresee any problems with the way it's installed?