OK, guys--Let's start with the basics.
Either be in RIGHT1 or RIGHT2, it doesn't matter.
Click on DRUM KITS
Go to Page 4, which will be USER KIT
Click on PROGRAM MENUS
Click on SOUND EDIT
You will see a screen of DRUM SOUND EDIT
Before I go any further, you need to be FULLY understanding of SOUND EDIT before you can understand how to use and edit USER KIT. Until you know this, I suggest you hold off in trying to use USER KIT. Once you know how to use SOUND EDIT you will then not be lost in how to find the drum sounds you want to change. At least with the above that I have stated, you will see the screen for doing editing in USER KIT.
Mark