Genesis V problems ... thud when there's no music

Hi all,

I've just had a pair of Genesis V landed from overseas and so I quickly connected it up to find there's 2 problems.

The first problem is one of the dome mid range has been damaged. It has been crushed / pushed in and both the dome and the grill is damaged. I've pushed it out, but of course it's all wrinkled and creased. I've called Genesis, and they have quoted me $225 + shipping. But of course they don't know how much shipping to New Zealand is.
The second and the main problem is that the active servo amp is making the woofers move (a lot) without any music playing). I listen to my music quite loud, so normally you don't hear the thud thud, but during the quite bits or between songs, then it's certainly there.

The speaker didn't come with any manuals, but from what I could make out the speakers are connected to my amp (an Onkyo AVR) and the servo bass amp is connected to the line out of my amp. This seems to work, other than the thud noise. Usually it goes thud thud thud about 2 every second or so, quite consistently. It doesn't seem to matter what the mid or tweeter settings are on, and it doesn't seem to matter what the hi/low pass setting is on the servo amp. Turning the volume down on the servo amp does get rid of the noise, however it may still be happening, but I just can't hear it because it's so low. When I unplug the line input into the servo amp, any noise goes away.

Can someone suggest some things I can try to get rid of this oscillation? Other than this unwanted noise, and the damaged mid, I quite like the speakers.