So my buddy bought the Pegasus and we're in the middle of the build! Couple questions:
1) why use the springs on teh heat bed? Does the underside of the heat bed need insulation for the heat bed itself, or just to protect the metal bed and mechanicals? We've been thinking this over and it just seems to make sense to use a spacer at the corners so the heat bed is always in a fixed position, which means the glass clipped to it will always be the same height, so you don't have to recalibrate the bed level every time you mess with anything. If we use say, a 1/2" spacer at the corners, there will be a gap between the heat bed and cork, which is good, but the heat bed will lose heat to the air, hence the question about using some soft insulation underneath that doesn't put any force on the bed, but still insulates the bottom

2) How critical are the dimensions of the rod guides that are attached to the gantry? We're supposed to print these and I'm not sure how great these will be considering we've never printed anything before

3) regarding 2, it would be nice if there weren't any pieces the user had to print, since some buyers will be first timers, we don't have anything to print with yet! So now we are forced to build with stock M5 rods, print the pieces for the ACME rods, and tear it apart to install the ACME rods. Same thing with the bed extenders. Looking at having a commercial outfit print these so we can build the Deluxe mods right away.