I thought I would seek wisdom, I have a couple of new rope clutches for my C30 and I need to remove the old hardware. I figure after 21 yrs what I think is a stainless screw in an aluminum backing plate have become "one". The guy from Garhauer, the manufacture of the old clutch and the new thinks the screw may be more stuck to the base of the clutch than the inbeded aluminum plate. I need to pack all tools I have before I head to the boat tomorrow and figure I should get some good ammo here. Any and all ideas welcome. The net - net is a most likely stainless screw from Catalina (correct me if I'm wrong) screwed into an aluminum plate + 21 yrs. I would like to save the threads in the hole so a total drill-out is a last resort because of re tapping and going up to a bigger screw.