Na man i totally forgot about this. I can do a how to but its really easy to do. Buy leds, trace the outer diameter on the back of the light and use a dremel to cut it out. once cut put led in hole and make sure its straight then use super glue or the cement type stuff to hold it on there. mine have been working flawlessly and havent noticed any leds out .
R.I.P. Flat black focus