I took a chance and let a guy who supposedly knew what he was doing build this.. I bought all Timken bearings, races. Yukon aggressive clutches...
This was the carnage after said guy didn't torque pinion nut.. I was pi$$ed. That sure grip was perfect in fact I built it myself, it was the only part of the 3rd member built right.
Mine is a fair bit deeper than the marks on yours.