Yeah, I know… once I have fewer things on my to-do list I think me and him and anybody else interested ought to heckle forums.xilinx.com until they own up to this issue.  I have been seeing the very same "center of the fabric drops out first" phenomenon, but until I read about his experiences I had it chalked up to my crappy homemade boards.  Now that I'm seeing it on ztex's boards too I am kinda disappointed with X.