Hi AllThanks for all the past help. New question. On my "new to me" 1986 34 Hunter, the solar vents don't seem to be working. I've been told they probably need new batteries, Nicad I assume. Before I take them apart, it appears that I have to access the battery by taking the outside off the boat and it appears to be caulked to the deck. Does anyone know what type or size of battery required and the easiest way to replace them?Thanks for your help!George