If anyone has a 356 maybe you can help me here. My boat has a rigid vang. It is a telescoping design. There is no spring or pressurized cylinder or piston within it. It simply is free slide as the boom rises. It is of course anchored with a flange bracket and 2 Allen fasteners to the underside of the boom and pinned at the opposite end at the mast step. And of course there is a block and rope arrangement to release it to permit the boom to lift. I purchased my boat used. Apparently someone has moved the Vang attachment points at the underside of the boom. I see 2 threaded holes in the underside of the boom to accept the Vang flange attachment. However there are witness marks in several other places where someone has moved the attachment points and simply tightened the allens against the boom to hold the Vang in a lower position. So I found that if I move the flange back to the threaded holes -thus raising the boom...then when the main is fully up I have a 1-2 inch fold along the foot where the sail bolt rope slides into the boom. So here is my question; does any 356 sailor have information on how to determine the correct fixed position of the Vang’s attachment to the boom. My apology for such a wordy message here, but thanks for any help. Jim on SamiDog in Mackinaw City, MI