Totally a simple job. The palm keys are also easy to remove. You could remove it to make it easier to work on. You will need a heat source like a heat gun or propane torch and of course a pad sized for the cup. If you are already shaking your head, I understand completely - not everyone has a set of screwdrivers, a heat gun and a hot glue gun. In that case, you may as well take the sax to the shop and let them replace the pad and check the other small upper pads.