tc and Graydon - thanks for bringing this up, just when I'm in the middle of some restoration and looking for some clutch screws myself. The site you mention tc is a good one and that availability will help a lot. Other than Ecklers (vent screws only) I haven't found anyone who has these things. I have started saving and salvaging all of my own that I can. Lots of fine time consuming labor but its working pretty good.
In this case savin's easier than findin'.

Dale