I got sick of the wobbly, loose desk clamp on my T500 wheel, and finally decided to hard mount it, but keep it removable. I've threaded some long bolts protruding down below the base, drilled a couple of holes in the desk and can tighten wing nuts underneath the desk. It was nice and fiddly - I basically had to take the whole thing apart to get some long bolts down from inside the interior metal bracket. But now it feels nice and solid - no more pushing the damn thing back against the edge of the desk 2 or 3 times a race.