Ahh Moebius was right... people why do you choose to fight.... OK so if there's a problem with centralising the LED location to get diffusion even, then don't fight it, USE IT :) For eg, if the LED has to be offset to one side, then use the visual effect of that positioning to your advantage, for example, you could set it up so that the LED's shine out through a small vertical slit, making a little 'comet tail' shoot out of the button when it's lit, or you could have one LED on either corner to make a kind of faded frame, or you could put an LED lighting a slit underneath the button like an 'underline'... Geez I could go on for days. Use your imagination! This is MIDIBox, you can customize... I don't remember the 11th Commandment being "Thou shalt only mount thine LED's in the middle of thine buttons"... so just because the commercial controllers do it, why should you? Think outside of the box, break the mould! :D