Yeah manual has some odd info. I was going over all my CVDs last night and I noticed for the gear boxes it reads '4-40 set screw' but the picture is of the pin, and the axle CVDs show the same pin but have it labeled correctly.

As far as the shims, your goal is to have a smooth mesh with as little side to side play as possible. Mine are weird. I think my front has 7-3 and my back has 8-2. I took everything apart last night and there is zero wear on the gears after an hour total of run time.