Ordered a couple Tereflex heavy duty differential covers from Rebel Off Road. You can see the major difference in thickness between the stock and after market covers. The stock covers are like paper.
This was a fail simple install. I opted NOT to use a Lube Locker but to use off the shelf RTV for differentials I picked up from my local auto parts store. After removing the old diff fluid and the covers, I scraped off any remaining RTV from the factory. Some of it didn’t want to come off, so I put a wire wheel in my rotary tool to make sure it was perfect. I cleaned out the gears with brake cleaner and made sure there was no other debris. After applying RTV to the new diff covers, it was just a matter of lining up the bolts and tightening them down.