Mell0hYellow

So I just bought a 91 fastback and the previous owner had epoxied the fuel pump door of the gas tank. It died on me on the way to the car wash. Everything electrical is fine and it cranks. I do have spark and I hear the fuel pump priming but I'm pretty sure that its clogged as the rest of the inside is rather rusty. Problem is the epoxy is on there pretty good and I can't get it up to even pull the fuel pump out. Should I just get a new tank and pump assembly or does anyone have any advice to getting the epoxy off?