Changing out THAT speedo is very simple.. the gear in the transfer case is what adjusts the speedo.. They come in colors and number of teeth to change the reading of the speedo. Your gear might be sticking or worn or loose or something.. I would take it out and clean it up and try it again before changing the speedo..
Big Jim <img src="/forums/images/graemlins/pfft.gif" alt="" />

professional bovine relocation specialist