I muck the (K)Q if an ace raises, but if they are going to call you no matter what, I might pick off one to see if I improve. If I am going toplay an ace, it in the hole, so if I hit it, I get action. You will get folds against (8)AA, but calls against (A)8A. If your ace is up than I want another decent card underneath, J, Q, K, etc. If the board pairs higher than your pair, fold everytime, unless you have a couple of overcards on 4th.