Hello, I got a 31 tooth speedo gear for my jeep with 3.73 and 33" tires. I looked at all the charts and this seems correct I put it in and rotated it to the correct number. I checked it with GPS, and im still 2-3 mph off at 25mph... My problem MIGHT be that the little dot does not line exactly up if I put the clip on. The grooves where the retaining clip pull it out of alignment when I put it in. Could that be it? Thanks!