Just getting my wife into sledding and bought her a 2005 XCSP 500 as it's a sled she can control easily. Problem is that her throttle hand is constantly throbbing and then ges numb. She has small hands and think it's the throttle control. Heard from a friend that they once installed an E-Z Throttle control on their sled and it seemed to help. Called my Polaris dealer and they no longer sock as was targetted at the olde sleds. Any idea where I can find one and any opinions from people who used one?