KK2 Pro buttons for KK3 Pro?

So I recently bought a KK3 Pro controller, but it has the nintendo configuration. I tried surfing the internet and so far ive only found KK2 Pro accessory kits, at least where, I live, I seem to not be able to find KK3 Pro accessory packs. My question is, is the KK2 Pro buttons compatible with my KK3 Pro?