Bought a Pearson 303 and I have a question about rigging the mainsail. The previous owner had it rigged as in the photo with nothing attaching the sail to the boom at the mast. Pulling on the out haul just pulls the sail away from the mast. Something is missing but I don't know if it a Pearson 303 specific part or not, and there are no nearby Pearson 303s that I know of. Any info would be appreciated. Thanks.