WEll, I am trying to get an idea of how to get it close to correct. Seems like if you bump the speedo gear 1 tooth up or down, that will get u roughly 3 miles per hour. Maybe to get in the ball park I need to do it the old way, and pull the squad car out of my drive and hit it with the radar. Can't do that til nice weather

thanks for all the help though,
Ryan