Need to get the seat out to paint it's frame on this Escort. Passenger side was easy. Now the driver seat left front bolt is stuck. I can loosen it maybe 30 degrees but no more. Been working it back and forth with no change. Haven't tried an impact as I don't want to snap the head off. And heat may weaken it too. Still too tight to spray anything on the threads. It does not go through the floor. Any ideas? Might just try the impact if nothing else works.