Greetings Everyone, My first Official posting. Is anyone familiar with this offer on E-Bay to test tubes? http://www.ebay.com/itm/Power-Tube-Testing-Service-Low-Power-Eimac-Electron-Tubes-8877-8874-4CX250B-/291362633865 Or anyone else that can test power tubes? No sense building an amp around a tube, if you are not totally sure the tube is good. Joe WB9SBD