Hi, I am trying to source the bottom of a mast that fits into a Mistral Club board, I was unfortunate at the weekend in breaking my friends mast base that attaches to the board . Alternatively is there anything else I could do to make a modern base attachment fit this board. The board itself has 2 round holes that the mast just fits in one, the mast base just rotates by 90 degrees and locks in position by a locating pin ...The board is from the eighties era..Any help would be greatly appreciated