Ok, you have the same issue my friend does. He finds very few headphones actually comfortable, because pads that rest on the masseter muscle a specific way always bother him. I do understand the problem. Not sure a pad replacement will fix your issue, as it just may be the diameter of the pads and where they rest that will always be an issue. Perhaps try something smaller, or even on ear. Sennheiser oval shaped cups tend to be quite a bit more comfy in terms of how/where they rest on your face (i.e. Game One, PC37X, 558/598). Try those instead. I wouldn't go with AKG, because I think they have the same problem of sitting right on the sensitive areas of the masseter muscle.