Just wanted to publicly thank Mike (mrkyak) for fixing my box! Very nice to meet you and a beautiful job. And, a huge relief as I'm leaving for a trip this week. Thank you! Thank you! Thank you!!!!
I am in contact with the vendor (NOT Riverboat Works). Upon closer inspeciton, it appears that the welds on the long sections were reworked before I bought it (sold as new). Two years later, the short sides failed.
"Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did do. So throw off the bowlines. Sail away from the safe harbor. Catch the trade winds in your sails. Explore. Dream. Discover." - Mark Twain