Hi Mick,
I am using a decent cable length and have all wired the same as everything as i have some HB stuff mainly. Even plugged into the computer via the hub its no good. Paul is sending me another one after doing a heap of testing and establishing its the hum sensor.
I just had a look at your mods and they look great! Im running WD, would the solar mod just work the same as my old HB solar sensor?