It's killing me too. There were something like 7 printers at the conference, but only one was big enough to print the top, and it had just been built, so it wasn't working well enough yet. Right now we're stuck on a few CAD adjustments. Alan pointed out a couple of things we forgot about in the original design. The problem of course is that my CAD guy also has a real job, so I'm just waiting until he can squeeze in some top time.