1. It turns out that our free donor axle had spent many years in a pasture before being offloaded on us. The inside had a thick coating of rust-colored goo and chunks of who knows what. We were so sketched out during disassembly that we neglected to take photos of the inside, but it looked much like the condition of the leftover parts you see here. No amount of brake cleaner was going to get it clean, so we wisely sent the housing out to be sandblasted after we completely gutted it, which set us back about $40. Money well spent. We even burned the clothes we were wearing during disassembly rather than contaminate our washing machine.