I had that happen--I believe it was my thread. I had to just answer based off of my own past experience with the shop because two of my questions were answered verbatim off of the guidelines and did not match up true to experience. I'd contact the scheduler, just to be sure, before you hit the submit button. I took a leap of faith and changed my answers on the last test since I would only miss out on a few shops, but thankfully it worked in my favor.