I have been having a missed shot issue with my gc3 at what I would consider an alarming rate(missing 30%+). Believe it is a matt issue, but will test the theory this weekend. Like another user above I have a serious amount of ground force and the unit seems to miss shots when I make a big turn and give it the full treatment. Assuming it isn't a capture speed issue as it picks up other users at similar speeds, but seems to be as soon as I start making a full turn and weight shift the matt slides a bit and the unit wont read. Going to try to secure the matt to the garage floor better and hope that resolves the issue.