Hi Rikki,
I'll check that mailing list out to see if Ketron has a style maker program for the midjay. 
When I talk about having 2 or 3 drum tracks, I use more than what is allowed for drum tracks.  
So for example, on my genesys, of the 8 style tracks, there is only one drum track by default.   
What I would do is use one or two of the other tracks for drums.  So for example, I would have bass and snare on the original drum track, cowbell on another and handclap onn another.  Then in order to make sure that the newly created drum tracks do not change notes when I change chords, I would lock those track so that they would act like a drum track.  This way gives me a better way of controlling and mixing the sound on a live gig. 
That is why I was hoping I could have created styles from scratch using EMC.  Well I guess I would have to continue searching for such a program.
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TTG