My son has a 1971 Sunfish. So far I have taught him how to repair it. His boat has the metal bailer. The top unscrews off and all the threads look good. But he is missing the ball. I have search and found part number 79332. But I can't find anyone selling it. The only bailer replacement balls all say not for old metal style. So I'm reaching out to see were I can purchase new ones for the metal bailer.