Help me please. I ordered a steering gearbox repair kit from kragen and autozone. Both were the same part number both are wrong. They are both an 1/8th inch to big in diameter so They wont fit. So I called and had them cross reference the original seal (7832426) and thet keep coming up with the seal that is the wrong size. Is my gearbox wrong. Both stores looked it up for a 90 gmc jimmy (fullsize) w/ a 350 and both are wrong. What do I do. Maybe it is time for the cross over swap????