I took delivery of the SR 500 today. It has 6DQ5 finals in it. Overall the Radio looks good. Some restoration was done to the rig. Paint, caps etc. My question here is where can I get a Mic, or even just the Mic plug. Are these easy to find? It is a 2 prong screw on type. The Jack in the rig is female. Thanks -Pete N9QZD