I am trying to locate a source for older machine schematics. Currently we have a Chemtool Electro-Chemical Deburring machine, Model 350 V5, that we think is worth repairing. It would be easier with the electrical schematics. Since it is an older machine, and the company has changed hands, the schematics are not available through the usual sources. Any suggestions on how I could obtain this information would be greatly appreciated.