Hummm. I have a spare steering box that I currently have disassembled and am going through for my 76. I have new seals ordered and my bearings look good. My understanding is the worm gear bearings are not serviceable. The two other bearings & races and all the seals are pretty easy to get to. If they can service the worm gear I would be interested to know how they get to those bearings and cost. If you ask!