I've had my Garmin R10 for about 4 months now, and for the first couple of months, it was working great. Accurate numbers, direction, etc. Now, although my setup has not changed, it is giving me wrong numbers, no matter what I try to do to fix it. I use the Pro V1 rct balls, with a net 10 feet away and the garmin is 7 feet behind. I've tried recalibrating, and just about everything else. Any help with this would be greatly appreciated.