Don't forget to align the BH to the crank centerline!
Make sure the transmission levers are tight on the shafts, and that they will STAY tight long into the future. I do this by pulling the cover, and applying RED-loctite in the space between the flats on the pin. Then re-install the special nuts just snug and set the cover down nuts on the bench. Come back about every 10 minutes and shift them to make sure the loctite has not wicked up into the pin-bores. After the loctite has set, remove the special nuts and BLUE-loctite those and torque them up. Reinstall the cover and never loosen those special nuts. You know about those special nuts,right? The ones with the load spreader bases that are serrated, and about grade one-zillion? Do not install regular grade 5 nuts here with spring-type loc washers. That's just asking for trouble. They will work loose. Then the constant shifting will crumble the RED loctite. Then it will become increasingly hard to find the neutral gate. Then you may find yourself stuck in one gear ,in traffic, in a foreign city, wearing your Sunday-going-to-meeting best white-shirt suit, with no ramps, no tools, and no loctite, and a whining PMSing B-wife. So get the right nuts.
I like to change the hard-to-get-to freeze plugs on the sides too,unless they are reasonably new, as in you know when they were last changed. You can't go by looks on those.