George,
Just a tip: Generally (unless you copy from the internal styles or LOAD solton X1 styles) the user styles do NOT have the 2nd drum tracks (Grooves) associated with them.
As a test:-
* Press F10 (I think) and MUTE the GROOVE track all together.
* Next try again using an on-board style and a loaded pattern. Still different?
When you are assigning the different parts of the accompaniment,
* do you also assign the GROOVE tacks too?
* are you using 'SEPARATE OUT 1, 2, 3, 4'?
* are you switching REGISTRATIONS (if yes, you might want to DIACTIVATE the outassign feature under UTILITIES, PAGE 2, REGIS MODE.
Let me know the outcome (if any) ... else you might have to contact KETRON directly.
AJ