ok so i just bought my sy a few months ago and the speedo and odo were not working. I finally crawled under my dash and found the DRAC was not connected. I connected the DRAC and the needle on my speed is reading way off!!!! it reads 20MPH when im going 5MPH and 40MPH and 50MPH when im going 60MPH. does the DRAC need to be recalibrated or is this more serious than that? Thanks