I ran 300m Branik shafts in my JHF portal car with 4340 RCV Hummer bells. I measured the shafts using the RuffStuff gauge, and accounted for a center pin. Jesse Haines said don't run the clip to keep the shafts in the bells, and I never paid attention to the Grizzly locker not having a center pin. This allowed the shaft to walk 1.25" and stripped the splines in the star and the 300m shaft. I purchased the RCVs second hand, but new never ran.
RCV priority shipped me replacement parts and I didn't even cover shipping. Stan Haynes never implied a warranty and I never asked. While he didn't just send a free shaft overnighted to me. He did give me a ridiculously hefty discount and prioritize sending it to the heat treater. Neither had to step up for something that was completely my mistake. I would still gladly buy Branik or RCV again even without a free replacement warranty.