Hi Trekster, here you go,
I used a piece of blank PCB board material, cut it to fit, took an Express PCB, marked the mounting holes for the LE on the blank, drilled the holes for the case, marked and drilled the holes for the MR16 boards, used nylon bolts, spacers, and nuts for the MR16 boards, and screwed the blank PCB to the CG-1500 case, same as the LE. Works great.