I tried using Jurgens One note changer but found it to be harder than using Style creator. You have to know the channel number (I think that is 10 for the drums) and the note number. There are 2 numbers on the data list for the bass drum for the style I was working with (40sSwingBallad) , (B0 and C1 (midi note) or B1 C2 (keyboard note). In Style Creator it's easy to find the right key (look on display keyboard (kb) note and hit the bass key that's active). There might be an easier way in One Note, but I had to hook up a midi cable between my GENOS and PC and use a PC style player to identify the correct note by trial and error, much more fiddly.
If you find it useful here are the steps I use to modify a bass drum with Style Creator:
Enable the style you want to modify
Go to mixer and lower the volume on the instruments except the drum (makes it easier to hear the drum)
go to menu 2 and hit Style Creator
hit REC CHANNEL and then DRUM SETUP
hit style start/stop to hear the drum
hit the piano kb note that is active on the display kb when you hear the drum so that note is the one to be modified.
lower the LEVEL to the desired volume
hit EXIT then SAVE and save the style with a new name where you want it stored. I save it in a folder called Modified Styles that I keep in the USB.
The nice thing using Style Creator is you don't have to know the channel number and it's easy to identify the note to be modified
Hope this helps.