Hi Kerry,
Thanks for your answer! It was much easier than I thought to replace the cover; it just slides right underneath the tabs inside! Here is the link to the company I went through to buy my waveguide cover, http://www.fox-international.com/. I'm not sure what all is available on their website, but give them a call and they should be able to find one for you! Hope that helps! Thanks!
Krystle, July 2007