First off I'm going to suggest doing a little reading up on MIDI in general. If you want to make beats with software or hardware it's best to know at least the basics, as you will encounter issues like you're having all the time. But if you know what to look for on an interface/GUI it's much smoother sailing.
MIDI has 128 possibles values it can send a message with, 0-127. C3 = MIDI note # 36. A majority of plugins default to this being the first note on the keys or pads.
So load an FPC and look in the upper right corner of the plugin GUI. Press Pad 1 on the FPC and look in the upper right where it says "MIDI note". Click where it says C#3. Change it to C3. Press Pad 2, repeat the process but make Pad 2 C#3. Then make Pad 3 D3. Just go down the note list in order until you have all 16 pads remapped. You could continue down the note list and do Bank 2 as well if you want.
The majority of MPD presets follow this chromatic note ordering, with the exception of the GM Drum map and the Live preset which uses more than MIDI channel 1A.
Save a blank FL song file with the FPC loaded and your assignments done and you can make new kits off that. I will warn you though, every time you load a preset into the FPC your mappings will get erased.
If you want to make the mappings permanent you better start reading this -
http://www.image-line.com/support/FLHel ... inking.htmI think FL's MIDI mapping is way more trouble than it's worth and is probably the least user friendly implementation of MIDI mapping I've ever seen. It works but it's just not intuitive in the least. Reason and Live do this much, much better.
If you have $50 and want a VST that's like the FPC but superior check this out -
http://www.onesmallclue.com/poise.php