Guys, I have a very newbie question. I'm trying to adjust the length of pull for a 20 ga SX4 shotgun. They sent me an extender and some additional screws but I'm unsure of whether the screws are longer than what is already in the gun. I'm trying to screw back in the stock with the extender but it does not seem to be grabbing so I'm guessing the screws aren't long enough and that is why they sent two additional screws with the extender. My question is this: is there a good way to remove the old screws without destroying the recoil pad? I only have two very tiny holes in which to pull them out of the recoil pad and install the new screws. Your help is much appreciated.