Finally got the parts and the time to work on this. Got one bearing seated, then measured the inner-wheel spacing from the back of that bearing to the base of the opposite bearing seat.
Cut a chunk of pipe that made contact with only the inner bearing race (sp?)
Then seated the other bearing and sat the brake hub on to get the measurement for that spacer. You don’t see it, but I also installed new brake pads....someone said brakes are important....sounds like bullshit though.