You can use "DRUM SETUP" on s970 to "pitch-shift" any sound of the drum kits assigned to ch9 or ch10 in a style file, and I use this functionality to tune my chromatic instruments in the assigned drum-kit to the song.
However, there appears to be a global "pitch-shift" parameter which will "pitch-shift" the entire drum-kit (i.e. each sound assigned to each note). I can say this with certainty, because even when I replace the original drum-kit in the style file with any other drum-kit, the entire drum kit is pitch-shifted down by five semitones from the outset, without using the "DRUM SETUP" function. So the Style File appears to have a global parameter which is set to pitch-shift (NOT transpose) the entire drum kit. I have scoured the available documentation and FAQs related to Style Files but to no avail...and this boggles me because there are people out there using this function!
I was hoping someone on this forum had the knowledge of this global pitch-shift parameter. If you are technically savvy and want to try out for yourself, I can make the style file available to you.