ok, some buttons were sticking so i decided to clean them. everything went fine. the backspace was playing up so i took it off, now im not sure how to get it back on. luckily nothing is broken so its just a case of working it out. to compare buttons i took off another one, but this time i broke 1 small little bit of plastic where i think one of the square things clips in, but it should still work good enough. any ideas?