Crumar Musical Instruments User Group.

I've had a bit one for a while, and have discovered a strange oddity; 
when i hold three notes, then strike a fourth, the fourth note will 
be twice or three times as loud.  This problem also occurs if the 
polyphony is overloaded via a slow release.  Anyone know if this is 
typical/fixable?

Another oddity is on some presets, where pressing one note will give 
a pitch, but on pressing a seccond will shift both notes a half-note 
up.  Has anyone experianced this or do i just have a broken synth?