Interesting, it looks like the shims they sell are for the H072 and they go behind the small pinion bearing at the end of the shaft, not behind the main bearing races. Odd.
I don't bother with the gaskets on my rebuilds. Just lots of Ultra Black RTV.
Be careful with that pinion shim setup. There are two different designs I have found. The shims going behind the small bearing are for a different style of gear with a different size 3rd bearing snout.
