HI I am new to the message board I have read may of the messages posted. This is the first one I have found that I might have some to say about. I have used the spray basting. It does allow you to pull your pieces apart to reposition them to smooth out any wrinkles that you may have made. The one I use says you may reposition your piece up to one month. As long as it holds everything together when you pick it up it is working.