keep on a turnin on em blob. Those screws in the recoil pad are about an inch long. I suggest you shoot a lil lube (or at least spit on it) the screwdriver so the pad isn't catching and grabbing the tip of it. But you gotta turn them a pretty good bit before you see any movement. More than likely they won't come out of the pad, they will seperate the pad from the stock.
Keep on a crankin, trust me they will come off.
RA