Well, i own a KI2 and have a couple of New Geo control panels, so checking their spacing was easy. I can post the cad file for a KI2 if you like. I only drew up the buttons from the Neo Geo. I can the drawings from my changeable button pads on the 4 player as well if you like. I just went with what was the most comfortable for me hands. I figure i play these games more than anyone else, so I should make them as comfortable as possible.