(I've been working on a little tips and tricks document... this is what I've come up with for this topic)
Building Banks in your MPC2500
Stick to a specific layout so you can be up and running and familiar with where things are in your pad banks. It is good practice to map your pads using a specific GM layout will make your sequences compatible with any other GM style mapped kit and interchangeablebetween tracks.
It is not necessary match and use all the sounds, but matching the core sounds - kick, snare, side stick, claps, open and closed hats, crash at the very least.
To re-number the MIDI note assignments on the MPC.
Press the [MODE] key and then the [PAD 7] PROGRAM select ‘NOTE’ (F4). On pad A1, change the note number to 35 using the jog wheel. Then do the same for pad A2; making it 36. No re-number incrementally each pad +1 each time and soon you'll have all numbers from 35 - 98 running in the numerical order, just like a keyboard.
Create a new program with the different pad layout and without sounds.
Save this as a template to use each time you create a kit.
When you save the program, the pad mapping gets saved with it. When creating drum kit programs use a GM type layout. Not GM drums themselves, but kits that are laid out in GM order.
http://midistudio.com/Help/GMSpecs_PercMap.htm