Did you measure both wheels ?
I just now saw your response to this, sorry for the delay.
Yes, other than the wheel diameter I found no other differences in measurements between the two wheels(which I'll repost below). Given the opportunity to start from scratch I'm thinking I would like to run 520 sprockets. Would make o-ring chains possible I think.
Hub: 86mm
Hub to rim side a: 7.5mm
Hub to rim side b: 9mm (hub center beveled around thru hole on this side) Confirms 1.5 mm offset?
Thru hole: 2.34 inches (my caliper only goes 2 decimal places)