Hmmm I'm seeing a lot of 10uf 50v caps on the circuit board where the schematic spec'd as low as 16v. I wonder if this was just a case of Panasonic having them on hand? Or are there maybe different revisions? It's interesting that Vince's deck seems to have had the 10uf caps with voltage ratings in the schematic.
I don't think you can go wrong using the higher voltage rated caps as long as the uF value is the same. That said, when I set out to do the recap myself, I bought a couple boards off the Bay from a guy parting out his RS-1500. When I got them I noticed, as you have, that some of the cap values were different as was some layout. When I contacted the Tinman, he said they had several electronic revisions as the years progressed. I could send you these spare boards if you could use them, maybe to recap out of the unit, then swap in, which was my plan until I realized the project was beyond my capabilities and Tinman came to my rescue. PM me if you need them(pic attached) ....I certainly don't anymore.