Have an Aristo Craft RS-3, that has wheels that are too narrow! In order to get the wheels off, I need to remove a screw. But, does anyone know the best way to get said screws out of the axle?? Without destroying the screw head! I'm having a problem getting them out! Figure a small washer between axle end and wheel should push wheels into proper gauge, or a lot closer anyway! Information appreciated. Thanks.