Is the diff and bearing / preload adjuster cap cast iron? Can it be welded to prevent the adjuster from skipping out of the threads. I have damaged diff adjuster threads and the adjuster has slide out twice which has caused two a ring and pinion failures. This was discovered by the gear shop after they almost completed the re-gear. Since the diff is already trash, I figured I could weld the adjuster in place and wheel it until the ring and pinion break again, then upgrade to a 9.5" after market front. The damaged diff is an 80 series HP 8" front diff. What are your thoughts about welding in the adjusters?