The seat framework under the driver seat is broken. The vehicle is driveable, but somewhat loose. Report to me is that original owner (college linebacker) used to arch to adjust shorts after getting into the driver seat and one time something snapped. The seat angles back maybe 10 degrees from where it should be Does the whole seat have to be replaced or is there a seat base which can be changed? Or can the seat be aligned and welded? This is a leather seat with heater, electric adjustment.