So I am trying to remove a slingshot coil from underneath Rocky & Bullwinkle; I have tried using a multi nut driver, with 1/4, 3/8, 11/32, etc. 3/8 is the closest I can get to the magnetic nut, but still can't get a grip and remove the coil. Is there a universal magnetic nut driver to buy? Is there a website or store where I can get one of these magnetic nut drivers for removing coils under the playfield?