Dave Smith Instruments SYNTHESIZERS

First few hours on a polyevolver, though I've owned an Evolver before.
Similarly - I've used the soundtower editor before, but I'm new to combo
mode, both on the poly, and in the editor.

So, maybe I've misinterpreted how this is all supposed to work.

Shouldn't I be able to, in combo mode, set up 4 instruments in mono mode,
and play different sequences on each one?

Can someone tell me how to do that in the editor. I just get the strangest
behavior - the number of the programs not matching the descriptions, the
programs seemingly not matching the chosen instrument in the combo menu -
essentially it just seems to be totally flaky.

Has anyone ever set this up?

I'm using os x 10.4.4, which may be an issue. But I thought it was only
potentially midi that was a problem...

In any case - I am ready to sell it (bought it used and can probably get my
money back), and just get a PEK. My preference would be to find out that
this is just user error, and that the editor does bear some semblance to
functional.