Toddbe:
I went through similar a week ago after waiting five weeks to receive my 27" iMac with 3TB Fusion Drive. I went through three techs and two senior advisers before they decided they could not solve my problem. At one point I was told to simply take it to an Apple Authorized service center and they would fix it in a jiffy. The service center didn't seem to think so and said I would be charged for any software fixes.
That cinched it for me. After five weeks of waiting, about five hours of lost phone time, maybe 16 hours of wasted time altogether, and a promise that I would have to pay for the fix, I talked to a nice lady on the phone who helped me start the process to return the computer for a full refund. Now I'm waiting for the refund, so I can decide what to do next; get an identical computer and not use Bootcamp, or get a smaller drive, avoiding doing any of my own partitioning?
The machine was absolutely beautiful.