I made a visit to my "new" boat ('73 hull #968, purchased this past spring) on the hard, to get some stuff off and put some tarps on her. I noticed below deck that both windows are apparently leaking (water frozen in the shelves below each.)I guess I'll need to replace the gaskets or otherwise reseal them once the weather gets a little more hospitable. Any suggestions how I should tackle this?Thanks in advance for any help yopu can offer.