ReRemix: MakerbotRep2/2x Filament Tube Holder Double Barrel

I shortened this by 1 hole on the end so it did not conflict with the Replicator 2X lid. There was no issue with the old design on the Rep 2, so this was not noticed until I decided to make one for the Rep 2X at work. Holds the filament guide tubes much more securely than Makerbot's thingy! Note: the second file, ending with "2X" has a shortened lip to accommodate the 2X that I have here at work; it was about 4mm to long and had a conflict with part of the printer.