I was riding my 2006 636 today on the high way cruising at around 70, when about 20-30 minutes in my throttle started cutting out. It got to the point where I couldn't get over 35-40 mph. I pulled over and shut it off, started it back up and nothing changed. i waited about half and hour and it went back back to normal for about 20 minutes and went back to cutting out. Any help would be appreciated.