There should be a third cleat on the other side of the mast for the main halyard.... When you installed the cleat, did you use the blind plugs that go in the holes in the mast? They maintain the water tight seal of the mast by deforming around the pop rivets as they are installed.
This is the info I needed, thanks. Can you tell me if the third cleat on the other side of the mast is a horn cleat or a downhaul cleat ? At present I have only 2X downhaul cleats installed on the rig. I am also a little unsure about the blind plugs? I used monel rivets, are they the same thing? if not, any more advise you can provide on installing correctly would be a great help.
AntonLargiader. Thanks also. I think it is the old jib halyard system, the one with the flat 3:1 metal block on the end. I have also located a refurbished cheek block to replace my shot one with on ebay, international postage pushes up the price, but worth the expense all the same.
Will keep you posted of my progress.