Hello! I recently bought a nice 1970 DS1 for my first sailboat. Previously I've sailed mainly Flying Scots and FJs. It's in great shape for it's age in my opinion and I'm loving it so far. The only thing I've done to it so far is make the middle section floorboards since the originals were missing and I figured moving around inside without them could stress the hull, especially while on a trailer. From what I've read the few issues it has are fairly common. The biggest that I'm worried about is the corner of the port side seats where they meet the hull has cracked. There's no movement of the seat that I can tell but I'm careful not to put all my weight on it. Is this something that should be fixed or not to worry about? Also, whenever I switch seats they make a 'whooshing' air sound out of the front plugs which is a bit annoying and I'm not sure how to solve since they flex some (normal?).
Other than that I plan on putting wider bunks on the trailer since I can see minor flex in the hull, and it's definitely being used as a 'trailer sailor'. I also plan on adding a boom vang and a topping lift. The centerboard sags a bit and the floor paint is chipping in places, but there are no blemishes that I've found on the outside of the hull and just the occasional spider cracks on the seats and around the edges. Anything else I should consider doing to keep a 45 year old boat in great shape?