I was wondering if anyone might be able to compose, or find a conversion table that could tell us the difference between what the speedo reads, and what actual speed should be, corrected for different sprocket sizes. For instance, I have gone down one tooth in the front, and my speedo reads 178 in 6th. What would true speed be? (with,or without correcting for factory speedo error.) Or, if I did the -1+2, and top speed is 159, then true speed should be... etc. I hope that made sense.