MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
I just downloaded it and measured the distance between the holes - It is 22.5mm and the holes has a diameter of 4.2mm. I got a printer that is very accurate and thus i dont need the tolerance. If the holes come out too big, it can be a problem. Even if the holes come out a little bit too small, the best solution (imo) is just to use a drill to get it to the 4mm.