[Rhoderman]

I finally got all mine out. I had to drill one though.

You might save yourself some headache if you run a bottoming tap down to the back end of the setscrew and chase the threads to clean up the rust. Once you get her broke loose, it'll come out easy the rest of the way instead of plowing through the rust. You can make a bottoming tap from an old plug tap using a grinder and some patience.

P-Blaster is your friend. Use lots of it, and use a high quality allen wrench. Once you wreck the hex, it's drill time. Use a scribe and dig out to the bottom of the allen socket so your allen wrench gets full engagement. Obviously don't use the ball end type allen wrench. Try tightening a wee bit before loosening, sometimes it helps break it free.

I thought someone posted an image of a cross section of the clutch set screws. If you can find that, it makes it all very clear. The outer set screws are standard flat or cup point. The inner set screws are pointed, and go just past the back edge of the pilot bearing in the clutch. If you drill it, beware on the inner setscrew as your drill bit will break through, catch on the edge of the bearing and wreck it. Been there.

Have fun!