I have an '82
The silver legs are wooden on my boat - obviously an "upgrade" by a previous owner. The legs should lift out - you should probably use a twist-lift motion to free them - and might want to squirt a little WD-40 around them to get things going. The dinette does form a double - under the port settee should be a full-length board that has two hand-holds - pull out the wooden support bracket at the aft end, and lay the board on the bracket and a wooden "tab" in the "L." You should have two identical cushions on the port side, about two inches thick - lay the top cushion over so it mirrors the bottom, and the indention in the forward starboard corner should lay neatly along the compression post. I had new cushions made with thicker padding here - 3 inches. The second cushion now resides in the captain's berth until needed, and it makes the double much more comfortable. Hope this helps.
