I just bought an old TS940SAT. The 10 dB attenuator was dead, so I opened it up and fixed it. R1 was smoked, and there was an over-voltage protection device on the antenna connector that was also smoked. No other damage or malfunction has been detected. Anyway, I would like to replace the bad part, and it isn't something I can get at Radio Shack. What is a good source of Kenwood parts? Thanks, Rob