I can't tell you how to do it but can tell you I have a Mato Metal Tiger all delivered with the Clark board set up and out of the box the airsoft spools up and the airsoft fires and it is timed to work together. Ie airsoft fires when the cannon booms. I haven't taken it apart as I am just going to resell it, but there must be a microswitch on the airsoft that actually triggers the Clark board for the cannoin sound. Just wanted to let you know it can be done.