Hi Mike
I presume you are discussing the qty 8 screws securing the back plate to the flywheel body. I have found that the only way of getting these out reliably is to use an impact screwdriver. Give them a good soak in WD40 or similar, ensure the slots are clear and then with the impact driver a good bash with at least a 2lb hammer will usually release them. A recent auto jumble purchase of one of these flywheels was so rusty that I could not even see the screws. Wire brushing, a soak in release oil, use of an old screwdriver as a chisel to clean out the residual screw slots and then a good bashing session and I removed all 8. Chris.