I need a power switch for an old 12 amp circular saw. It's an Electro Engineering 7.5 inch Model 1222. I think the company is out of business. They were in Chicago at one time. The saw is at least 25 years old. Probably won't find an exact replacement but does anyone know a source of parts like this? The saw is in great shape. "They don't make them like this any more!" Hate to throw it out because of a switch. HELP!