I recently acquired a Waltham 0/size 1907 grade 165 pocket watch. When attempting to remove the dial, one of the 3 dial screws was rusted firm in place. In order to get this stubborn screw out I purchased some Hoppes #9 Gun Bore Cleaner from amazon. I used a small glass dropper to carefully apply some solution to the screw from 2 directions. I placed some directly into the screw hole on the side of the plate, and I also applied some directly to the dial foot visible from the plate. I was a bit c