That a tough one to answer. I mounted a fat max tool box on my older TW and so far it has held up to the abuse of the tough trails. However, everything inside it gets beat to heck in spite unless it is surrounded by foam. My bottle of aspirin is now a bottle of powdered aspirin, and a 1 pound bag of almonds with a opening that will only pass one almond at a time has all of the almonds perfectly distributed throughout the two separated levels of the box. On my newer TW I've mounted one of those Tbags that were closed out and am hopeing that it won't do what yours has done.