The hook on the tire assembly on my 97 Kia Sportage 4x4 has broken. I've got the tire assembly tied to the towing ring on the bottom of the car because if I don't, the spare tire assembly flies open when I drive. I've gone to a Kia Dealer and they can't seem to find the part. All I need is the hook part that attaches the rear tire assembly to the bottom of the hatch- any ideas? Thanks!!