[martinrpeachey]

I've sorted several sets of lockers with the socket method. Use an imperial socket as it gives you that little undersize you need. Wrap the socket with tape - lots of it, so much so that it won't fit in the recess in the wheel. When you hammer it in, the tape will keep the socket square and stop it bouncing.

Hammer - don't use a lump hammer, it'll most likely slip off and damage the wheel. Use a big ball pein hammer, at least 32oz and hit it HARD 2 or 3 times - you only want to pinch the bolt, not drive it completely over the bolt/nut. Unwind the bolt a little and tap the socket off and remove the bolt by hand. This'll save you having to remove the bolt from the socket after.