Hello, everyone. My first time writing on the board. I would like to thank you all for (inadvertantly) answering so many of my quilting questions! What a wonderful group of people! I taught myself to quilt about 7 years ago and am always needing a question answered! Anyway, we had to move and my cutting mat was in storage for a few months. Needless to say, my husband did not store it properly. It is terribly warped (rippled). I have tried everything that I can think of to straighten it to no avail. Are there any suggestions, or will I have to purchase a new one? (It is the large cutting mat, 36x24.)