I think your right on the spacing. Each side by itself looks fine but there's something wrong with the coordination of the two side. It's like some Chinese puzzle! I may just do the other one up the same and then use them as is on the Pfalz since the only part that will be visible on the Plalz will be a couple of spokes through an inspection hole.

Or I may find myself with oodles and oodles of time here in Japan so I'll do a second pair of hubs using your 10 hole method.

One question I still have though is whether the holes on the two hub sides should line up -- or should they be offset by 1/2 hole?