Yup, the tail end of those carts can't take much abuse. I reinforced mine with pieces from a bed frame. Not pretty, but solid and will not bow outward.I'm thoroughly expecting an unpleasant surprise in late Feb/Mar. We've gotten light snow as late as May here, and early April has given us blizzard.
Did some work on the wood today, got through the pre-loaded cart, but decided to de-bark it, which took a lot of time. My 13-year-old son was a huge help, he did most of the splitting and loaded the rack in the garage while I was de-barking with a small hatchet. Needed to run to the store, so we quit before dark.
Also fixed the tabs and tail gate on the cart, which had gotten pretty bent from the abuse with the firewood. Forgot to take before pics today, but if you zoom into the bottom pic below, you can see the lower right corner of the tailgate was bent, and a few of the tabs were pushed out. The tabs were easy to bend with pliers. A dead blow hammer made easy work of the bent tailgate edges.