Originally Posted by air8

Try to dremel a slot in the head of the screws. I had a RTR once upon a time with the two aluminum shoe setup and after a gallon of use almost everything was siezed together. I had to cut the clutch spring screws in half and use pliers to twist/remove them out the front and then push the other half out the back of the flywheel. Also some have been able to grab the head of the screw with a set of pliers and twist/remove. Good Luck.

When going back with the clutch pins use a small amount of loctite and don't overtighten the screws. Snug the screw and maybe go 1/8 turn more.