Currie Enterprises offers powdercoating for its axles, but once you start scraping the axle over some off-road obstacles, good luck fixing the damaged powdercoating. We took the company's suggestion and painted our axle with some semi-gloss Rustoleum Stops Rust. Looking inside the F9 housing, the studs are threaded-into the 3/8-inch-thick face and then double-nutted from the back for the ultimate in retention. No problems with them pulling out, spinning, or pressing back in when you put the third member in. The stiffener plate and triangular welded-in reinforcements provide additional strength to an already strong housing. Due to the design of this housing, we think that only the most abusive will need the optional add-on truss.