The mount is one of the several that came with the camera I linked to earlier in this thread - I attached it to the rollbar support. I would have liked to attach it to the main rollbar but the camera doesn't come with a mount big enough for that and the only mount I could find of that size was a Go-Pro thing and cost something stupid, like £60.
My gear lever is the GBS quickshift on an MT75 - there is no spring, just a rose joint so it does wobble about a bit and rattles annoyingly at speed (common problem). So I often drive with a hand/finger on it to dampen the vibration and the rattle. I've tried a fix with some rubber material (details in my blog a few weeks ago) which helped but hasn't cured it. I have bought a new, higher quality rose joint which someone else said solved the problem for them but I haven't got round to fitting it. It's not a major problem so I'll get to it one day.