Hi Carbymaster, I thought I would start a new thread as the previous one you started was getting cluttered with too much other talk. I have made up one clip using your measurements but I made it a bit longer because the first one I made to the measurements made it a bit short to reach the clip fully. It is very difficult to get it to work, largely due to the short float travel. It is difficult to get the needle into the seat tube requiring very delicate manipulation and because of this I doubt too many people would master this because it is very hard to get it right.
The way I have it set at the moment is with the float sitting in the open position the clip is sitting almost horizontal and coming straight out from the center of the float pivot pin. In the needle closed position the clip holding the needle is probably 3 or 4 degrees above horizontal. This can vary depending on the depth of the needle seat and the variations in the floats. To achieve these settings I'm sure anything you had made would require tweaking to work and this I feel would be beyond many people, it takes a lot of concentration and I have been using a magnifying glass so I can see what I am doing