Hi Josh,
I used a small drill bit a drilled the slot in the clutch head screws. Drilled carefully through the clutch head screw. Got a set of easy outs from auto parts store in the tool section. Sprayed PB Blaster on the screws and screwed the easy out into the screw until tight. Backed out the easy out and out came the the &%@# clutch head screws. This was the easiest thing I could find to do since the side window channels are extremely narrow.
Tim