So, I've been using a keypad for a while now, but ever since I've gotten a deskmat for my main keyboard, this thing would not stay still. I use one of those touch-capacitive keypads so I'm basically slamming my fingers on a lightweight flat surface and it causes it to move around a lot. I tried using rubber on the bottom of it and it doesn't seem to work much. I wanted to know if anyone else ever had to deal with this and how they managed to fix it.