Sapcut, just for experimentation sake, repeat your test from just a little farther from the chrono. Like say three or four feet. I recently obtained a shoot through Chrono last year and was having issues with my readings and finally broke down and read the instructions and found out I was shooting to close to it. Should be a little more than an arrows length from the first gate, otherwise the timer kicks off while the arrow is still hooked to the string and is accelerating still if your too close to the Chrono.