emulatorII-list

Hi freaks!

From time to time, my EII's filters seem to misbehave in a very bad
way (kind of distorted / decalibrated?!).
If you want to hear what I mean, please go to the 

Files Section / Sound Bytes / Elms Buggy Filters. 
(second from above)

I play eight single notes, only the first seems to get played back
correctly (in cycles - the 'ninth' is played back correctly again and
so on). Then chords with three, six and eight voices in polyphony. It
seems that when the ONE correct voice is played, all other voices get
played back correctly, too (strange..). 
This bug can be corrected by either hitting the EII hard on its
downside, or opening it up and pushing on its chips. Both are not
really nice ways to 'repair' it ;(

Does anybody have a "diagnosis" ?
Greetings,
Elm.