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@gbj_tester
There doesn't seem to be any evidence that they actually changed the crank's spec, they just switched from a 110 ISO to 107 JIS axle. Depending on which old wives' tale you subscribe to in the ISO/JIS debate, that might have moved the chainline by anywhere from nothing to 3mm, but my best guess based on actually measuring ISO and JIS axles side by side is that the JIS axle moves the chainline inboard by 0.5mm, which is probably less than the variation caused by random tolerance and different assembly practices.