I have 100k on a 1200 GS and 36k miles on my 800. I find that numb hands can vary with where you get gas. Pay attention to that and you will see some stations gas sits in the tanks longer or something. I went over to
www.aerostich.com and bought a "throttle rocker" Its just a flat thing that you attach to your throttle and you can put some weight on it with your palm of your hand rather than your fingers. That solved my numb hands problem. It only costs a couple of bucks. Dave