I'm in the process of putting a Dana 44 back together. Its been a bit of a process so far; it looks like a pinion bearing failed but the previous owner ran it, till it didn't. The metal particles in the diff ruined the spiders and bearings. The pinion had 1/4 inch of play in/out and side to side, it basically bounced around on the ring gear and both ring and pinion are badly chipped. The only good news is, that when I opened a spare Dana 44 looking to harvest the spiders a 19 spline power lok fell out instead. I've ordered a new Ring and Pinion, I've got the case cleaned and painted and when the bearings arrive, I should be ready to start setting this up. Now for the question, the Pinion depth shims I removed from the carrier measured .035 and I think the pinion was marked -1 (the pinion has led a rough life and isn't overly legible). The new pinion is marked 4.312 (which I believe indicates that it has an offset of 0, this should be the depth of the bottom of the pinion from center line of the carrier). When I opened the diff up initially, there was indications that I wasn't the first person to do so. I'm not confident that an incorrectly setup pinion didn't lead to the disaster I found. Is there a stock Shim Stack up recommended? (I didn't find anything in the FSM, just the usual chart for using pinion offset tables). A document from Yukon gear indicates .042 is the starting shim stack. I do have some parallels that fit between the bearing cap bosses and a depth gauge, I should be able to zero in on the pinion depth. If .042 will put me on the money without having to tear the pinion apart over and over, that would make life simpler. Thoughts? Should I start with .036 and see where that puts me, or is the .042 truly the best starting point?