You need that specialty screwdriver shaped conveniently like vise-grips. Those little screws aren't made of a whole lot a regular screwdriver won't take them out. Use a small tipped phillips on the screw head itself and then snap a pair of vise-grips around the outside. Turn both the screwdriver and the vise-grips at the same time. If you bought a new set of reeds, they should come with replacement screws (my vito's did) if not, don't chance it, go to a hardware store and purchase new ones. The screws need a little loc-tite red (or at least blue) and to be put in equally as tight as they are right now. If one backs out, it's going into the motor and you don't want that...