John, I was looking to add an inner forestay lower than the top of the mast, thus the need for runners. I thank you for the info about the front section of the mast. I have a drawing of the extrusion from amel. My problem is the runners. Attached please find a fitting that I used on my previous boat and plan on using on Kimberlite for the mast attachment of the stay. It allows for the stay and an external block for the halyard. Fair Winds, Eric Amel Super Maramu #376 Kimberlite