If the attenuator does turn out to be faulty and beyond repair and I can't find a replacement unit off Ebay or whatever, I could always just bypass the faulty attenuator internally, replace the top and bottom cases and just use any high-quality adjustable RF attenuator in series with a 10dB fixed attenuator permanently attached to the RF input at the front panel. So it wouldn't be the end of the world I guess. <shrug>
Jinxie