Yeah, mind pop off. Well, I've gotten the space bar off before because something got underneath it and was messing it up. It was a pain to get back on, though, because it had this little wire attached that was spring loaded and had to be a certain way under it. Took me awhile to figure it out.

The more I use it the better it gets. Only a few keys are sticking now because they don't get used very often (mostly some of the numbers).