Well, it took two days to get the old arms off, a week to get parts, and eight hours, but I have one side done( I think!!). I made a fixture to hold a lazer bore sight for a rifle, then mounted it on a small tripod at the wheel centerline height. I then adjusted until I had the same measurement the full length of the bus. Worked pretty good! The bogie is NOT an exact thing. The shims are tapered and are only available in a few thickness. Also, as the bus goes down the road, the tires are pulled out due to the arm being in front. If the inside bushings are worn this will be worse. My drivers bogie tire is worn almost 75% in 16k miles. The others are almost full tread. The passenger side is nowhere near as far out. Best I could determine, it was toed out about 3/8-7/16 of an inch not counting the pull factor. I took all of that into account when I went back I took Jeffersons advice and erred on the toe-in side.
Lazer fixture:

Driver side done and ready for drum:
