While riding my 07 Wr 450 on Saturday "I lave this bike by the way" I was on a fast road section in 5th and I decided to look down to see how fast I was going. The speedo said I was going 130. I didn't think it was right so I slowed down and gassed it to see what the speed would do. It would jump like 10 miles an hr at a time. Has anyone had this type of problem, not a big deal just as long as milage reads right. I like to know how far I have gone, especially when doing the Idaho 100. Any fixes or Ideas?