As many have said already... Relax your grip, but I also use a throttle rocker and it helps wonders around town or on the freeway. I position the throttle rocker quite high compared to recommended positioning, but this allows me to use the throttle rocker to not only speed up when needed but also to slow down; i.e. instead of keeping hand wrapped around the grip the whole time, I loosely set my wrist on throttle rocker and thumb under the grip, but my fingers are free to move. When I need to speed up I rest my wrist firmer on rocker, when I need to slow... I grip the end of throttle rocker with thumb and fingers and lift back up to throttling off position. This continuous movement of fingers/thumb ... keeps my hand from falling asleep and becoming painful. On longer trips where I have more open road and want to hold a more consistent speed... I use a cruise assist along with the throttle rocker.
After a break in my wrist, a PT gave me this solution to eliminate the pain and stretch tendons... Put an ice pack on the muscles/tendons just under the elbow (if you move your wrist or squeeze to make fist- you'll see the muscle or tendon runs up arm to the elbow) and try touching the tip of each finger with your thumb. Basically, hand fully opened and then using thumb only reach toward each finger returning thumb to full open-hand position each time before reaching for next finger... Once you have loosened tendons... with hand fully opened... try curling all fingers (not thumb) toward palm until you can touch palm...then curl all fingers toward base of fingers... once you can touch base of fingers doing all at same time... then do one finger at a time down to the base of that same finger... little by little you will loosen the tendons that run up back of hand and will feel much much better.
Good luck
