When you do replace the R/R upgrade to a Mosfet R/R, your bike will run better. I got one, my headlight is brighter, the bike starts better and I get better gas mileage. My voltage dropped off more than yours(down to 12.8v) when the rpm's went up. If you run spot lights or heated clothes I would upgrade now, if not just wait till the one you have now goes bad.
so many roads so little time