A couple of the black plastic/rubber feet have come off my MBP recently and I'd like to buy replacements. Is there anywhere I can buy them in the UK without having to trek to an Apple store (quite a journey for me)? I've seen these on Amazon, but clearly they're not the genuine ones and concerned they're not going to be brilliant as, looking at the Apple guide to fitting new feet it seems quite a process and there's several 'pieces' to each foot. http://support.apple.com/kb/HT5236 Are the ones from Amazon OK, or should I really look for the genuine ones? Also, how do I find out which model code my MBP is? It's an early 2012, pre retina but hi res.