I have had the depth tool and after a while I quit using them, its easier for me to just set it up how I know and then adjust for the pattern, I make setup bearings for the ones that have shims behind them, or setup races for those in the case. I always start with a good known pinion shim dimension, if you look online Im sure there is a chart handy. then set pinion preload by feel without shims or crush washer, smack lightly the pinion back and forth to set races and bearings and put carrier in, set backlash, I use .006 for most some looser but I use the same so patterns will not be affected differently. Adjust pinion depth to center pattern in gear face to flank, heel to toe is not really adjustable as it is how the gear is made and run in. Then after set up go back and set pinion preload with a inch pounds wrench or I do it by feel and shim accordingly or use the crush washer. If using crush washer I locktite the pinion nut.