Hello. I have an old Clinton outboard. The model number is k700-2107a. I’m looking for the part that is a one-way valve that connects to the carburetor manifold. It allows the gas mixture to enter the crankcase, but it doesn’t allow gas to get back out. It’s shaped like a Star but the ends are rounded. Does anyone have any leads? I’m also considering selling the motor for parts instead. Does anyone know a good place to sell parts in case I decide to sell? Thanks