8 3/4 pinion shim question

Maybe I should explain a little better too. I appreciate the help and just want to make sure that I'm trying to explain it well enough to visualize it the way I'm doing. I took a set of calipers and squeezed from the base of the inner race on the new bearing to the top side of the race. When you hold the two bearings side by side you can see that the cage that holds the rollers of one bearing sits just barely a little taller than the other, so when you try to measure the height of the inner race, you can't quite because the cage gets in the way of the calipers. On the old bearing the cage is just about the same height at the top of the race, so I figure the rollers or race on the old bearing had just slightly compressed or settled over time and wear, leading to the difference in dimensions. I'm fairly sure the actual height of the race is the same on both pieces, it's just the cage on the one gets in the way a tiny bit when trying to measure.

I went ahead and pressed the new bearing on anyway with the bigger shim and checked the pattern to be sure and it looks okay. The gears are still a little noisy since I'm sure they've worn funny over the years, but they seem to work fine. I'll probably replace them down the road, but I'm not putting any kind of crazy power to them anyway. I need to replace the housing and axles at some point, so I may just replace the gears at the same time.