Alesis Andromeda A6

I'm experiencing panel freeze/lock-up/stuck notes any time I play a patch that utilizes the 
unison-x feature, whereupon I have to shut the unit down and turn it on again . 
Sometimes all I have to do is select a patch that has the unison-x button enables, and the 
Andromeda will freeze. Anybody know whats causing this?

Is there a way to modulate the filter CV input?

And if I got it right there's no way to independently control the FM to each 
filter separatly right?

Thanks!