Latest and greatest. Apparently this axle was from either a coastal vehicle (gulf coast) , the rust belt, or run through lots of high water in its lifetime. When i pulled the axles out, i had to use a plastic headed hammer to bang off and remove the brake backing plates. The flanges were so loaded with rust. I hate rust. One of the reasons i moved from the rustbelt was to get away from that bullshit. Anyways, i ended up wire wheeling the **** out of them to knock the heavy scale off, then spent almost an entire day with 3" diameter 36 grit rolocs on my air angle grinder to blend down the remaining steel to remove all the rust pitting down to clean unpitted metal, then sanded that with 80 grit on a DA to smooth it. Finally shooting it with 3 coats of a fluid resistant epoxy primer out of a preval sprayer. This should eliminate this problem permanently.