working on 90 -94 crown vic - replacing gas tank. everything is done except for sliding the filler neck into tank. appears to hang up on rubber gasket . i know it's got to be a tight fit to keep gas from coming out of it, but when you twist the filler neck to try to work the neck into the tank, the gasket just spins on the tank. i've put quite a bit of force on the filler neck to push it into the tank and it's like it's hitting a solid object, but i know there's nothing there. tried spray lubs.
thought someone might have a helpful hint and i can keep what hair i have on my head.
thanks,
~ curtis