I sent him a message about it, but so far, he hasn't responded. I suppose i could use my black ones, for his white case, if i grab it, but replacing them with white would look better. Black would make it look... different, Not sure.
In reality i would much prefer a "new" one, but a couple of months shouldn't exactly have worn it out.

How much trouble would it be to swap / fix the buttons on his case, with the ones from mine? Is it at all possible?

I had an issue with the buttons rattling in the case on mine before they swapped a butt-load of internals on it, how much of that is down to assembly, and how much is factory tolerances?

Again, thank you guys n' girls for the time and effort.
B!