I have an old pedal power unit and one of the first versions of the pedaltrain. When I bought the pedal train I added 4 small rubber feet that gripped better to the floor and lifted it a bit. Now I think they come that way. Nevertheless it elevated my board maybe 1/2 " Recently, I saw the new pedaltrains with the pedal power units installed under it. Wow what a concept, more valuable real estate on top. I put my pedal power under the pedaltrain to see if that would be possible and I have the clearance (Do to the rubber feet). Has anybody tried drilling the two holes through the front of the aluminum pedal board? If so what is the diameter needed? It doesn't seem like it would be that difficult, I just need a big vice to hold it. Any Ideas?