[Gunter]

Rick:
I just did the same on an '82.
It had 4 shims on each side and showed normal wear on the sprockets, so, it was aligned before the tear down.
I used Wayne's book page 158-159 and common sense.
It took a few measurements, and a lot of thinking, to end up with the right numbers in the end.
Consider this: If the sprockets are installed correctly (Left side concave out, Right side concave in) the same shims are used and no changes were made, it has to be the same alignment.
Are you using the old chain sprockets on the I-shaft? Installed new ones?
Did you do anything to the I-shaft? New bearings?

Quote: "The only thing that would lead me to believe that the sprockets should move back is that the sprocket is riding a bit out on the cam shaft (see picture 2)"
No, that's normal; the big washer on the center bolt has to press against the sprocket, not the shaft.

You need to tighten the cam sprockets with the center bolt when measuring.
Is the whole assembly installed as per page 158 in Wayne's book? Thrust plate, gasket, O-ring, fat washer, shims?
Is your case pre- or post 1983 1/2?
The measurement for the right side should be the same as the one from case edge to I-shaft dimension.
On page 159, figure 6-9, which method do you use?
With the depth feature on your caliper, what measurment do you get on the I-shaft in mm?