Well it took over two months but I am happy to say that I now have a new Da-Lite Contour Electrol to replace the previous one, which suffered from horrible ripples. As you can see from the previous link, the screen had developed rather severe ripples which made viewing bothersome. I went back and forth with Etronics.com (who I purchased the original screen from) and Da-Lite for 11 weeks but finally managed to get the replacement shipped to me at no cost! Da-Lite actually covered all of the expenses, which is really something to take note of. I estimate that the cost of the replacement as well as the shipping was around $1,000 which they paid for despite my original screen being past the warranty date. Kudos and thanks to Da-Lite!