When I got my 04 I went with -1cs on the stock chain. This year with 11000 miles on the clock I decided to replace my chain so I went with the 520 conversion. I ran into the same issue you have encountered. I said what the heck and went 520 -1/+1 and holy crap. I don't know if it is the reduced rotating mass or the +1 on the rear, or a combo of both, but now the bike pulls hard down low and into the mid. It still has the high rpm hit but I find myself crusing in town 2 gears higher than I used to. So either way, reduced weight or gearing change, my 10 is a much better street bike now. If it is the reduced weight I'd like to see what lighter wheels do.
green 10r, Akro EVO 2, Hyperpro rsc, tre, pcIII, Puig DB, K&N, Purvision HIDs, Speedohealer, GONE
08 Ducati Hypermotard S
08 Kawi Concours 14, Area P full sys, PCV, Flies out