Small update, since we've been talking about axles recently....
I acquired a GM 14 Bolt that was built by Six States with a new Detroit locker and Yukon 4.88 gears, courtesy of KSL. The price was right, but it was in SLC. Carl offered to pick it up for me and while he had it in his possession, he also checked the gear install. The guy that installed the gears slathered the entire ring gear with gear marking compound!! The install looked good, I got it home last weekend and spend today working with it. I pulled off the diff cover and found a fair amount of surface rust, with some bits being loose inside the housing.
This thing must have sat for some time without gear oil, after the gears & Detroit were installed. I'm not worried about it, but I cleaned it out real good today. Lots of soap, pressure washed the internals, carb cleaner, then a liberal hosing down with WD40 to keep any rust from reappearing. I'm going to toss a couple of heavy duty magnets inside the diff before it gets all sealed up, to catch any left over, loose junk.
After that was all done, I pulled the Rustoleum Gloss Black paint out and fogged the axle down with a couple coats from the rattle cans.
I'm going to keep the drum brakes for now, 4 wheel discs aren't a huge deal for me, with this build. If I decide that down the road I need rear discs, then I will add them. For now, drums are staying.