I have a Black & Decker 14.4V Firestorm Cordless Drill that has a burning odor immediately when pressed. I assumed it would be the brushes, but when I took it apart to check, it appears there are no brushes on this drill. The motor and clutch both don't have an odor, but the VSR Switch does have an odor to it. Since I've never encountered a problem with a burning odor that isn't the brushes, is it safe to assume replacing the VSR Switch would solve my problem? Is there something else that could be the problem? The actual part number for this drill is HP532.