So, I recently purchased a new house and went about changing the locks. The doorknob worked well, but not so much on the deadbolt. Installed everything but one screw which wouldn't budge. I ended up stripping it, but was able to remove it. Since it was the same model as the old deadbolt, I figure the screws on the old one would work. I ended up jamming the screw and now even a stripped screw extractor bit can't move it. Any help would be appreciated.