Elektron Musical Instruments

Hey all,
Sorry to interrupt those of you who are busy tweaking the MM, but I have
a few questions regarding it:

first thing: the LED's above the tracks don't seem to light up when I
want to select a pattern.  They light up just fine when I press them or
when I'm grid programming, though. Is anyone else's like this?  Seems
like a software bug, since they do light up at other times.  Anyway, if
nobody else's is like this, I need to talk to Elektron; if not, someone
should submit a bug report.

second: I wrote a sweet pattern to A01 yesterday and now it will play
two beats of it and quit.  This didn't happen until I wrote something to
A02.  The weird thing is, A02 will play fine; but if I switch to A01 and
play it (all two beats that will play) then go back to A02, I get
nothing (have to reboot).  But if I just go to A01, *don't* play it and
then go back to A02 it will play just fine. weird. I know a couple of
you have lost patterns so far.  Has anyone had a similar experience to
this?  Or were they just random pattern losses?

third: someone else already mentioned cracking open their MM to fix the
keyboard; somebody else mentioned fixing some loose screws in there.  I
wonder, does this void the warranty on it?  Anyone know?  I'm curious
because I have the same problem as I do on my MD: little flecks of
dust between the plastic screen and the LCD screen under it.  I've never
opened the MD to fix it, but I'd like to know if it's possible/how to do
it.  Anyone ever done this?

Thanks everyone!
Joe