I purchased a used Chevy 2500HD from a Utility Company in the NE Wyoming area and was fortunate to get all the maintenance and repair records with it. From about 70K to 140K miles there were a lot of axle seal and e-brake shoe replacements on the Right Rear apparently due to constant Axle Seal Leakage. One of the rear axle repairs was over $1,000 and digging a little further it was due to replacing the spindle on one side. Whoever did this apparently did a quality job due the truck tracks straight and there hasn't been a leak since. I always wondered how they repaired that and your video explained it thoroughly. Thanks for taking the time to do this and I wish you were a lot closer to Los Angeles.