Trying to get the rusted out gast tank out of my 63 convertible project. Anyone have any tricks for getting the rubber filler tube off for the tank? That is all that is keeping the tank in still. The original hose is solid as a rock and wont budge. Undid the clamp I could reach but the rubber is to hard to budge. Thanks Geoff Johnson 63 Coupe 63 Vert