I have a 1967 Mariner with what appears to be the original centerboard winch. The winch is made from a reinforced resin and stainless steel. The previous owner had varnished it, luckily the varnish came off easily. My question is: what kind of product can I use to preserve the resin part of the winch. It is in very good shape and I would like to keep it. Thanks in advance. Andre, Oday Mariner "Dutch Donzi".