I remember reading somewhere that a clutch only needs 3/4" or so of travel to full disengage. Are you saying yours will not disengage? I am having a similar issue with a Kirkham that is using a Shelby slave, it doesn't seem to want to disengage. I have built several Shelbys that have worked flawlessly. Just bolt all the pieces on, bleeding only took a minute or two, and they worked perfectly with no further adjustment. This one Kirkham is starting to give me heartburn!
If somebody has any ideas, I would love to hear them.