Use the old one for a pattern and make your own, or have one made by someone you know with the right tools. We did that and ended up with a table made of cedar. It's 1/3 the weight of the original table and is waterproof. And it looks way better than the original.
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Chuck
2013 Jayco Jayfeather X20 E (sold)
2016 Chevy Silverado LTZ 2 Z71 Crew Cab (sold, and dearly missed)