By the way, if you have a similar cart, after every paddle you should rinse off any sand or dirt from the “axle” area and wheel “bearings” before reassembling the cart to pull your kayak back.
The “axle” and “bearings” will use any sand as abrasive if you don’t take the above precautions, eventually wearing grooves into the “axle” area of the frame. That means the tube thickness has been worn down. On my cart, mine wore down enough that I bought a replacement frame from Wheeleez. I estimate I replaced it at about 700 miles of carting–my portage was about a 1-mile round trip.
My husband’s cart, a different brand and size with slightly thicker metal in the tubes, also showed the same type of wear. Since the wheel-frame connection is open to the elements, all you can do is slow down the wear by following my precautions. I wore out the replacement frame, too–at that point I just bought an entire new cart since the wheel tread had also worn down.
But that was still much, much cheaper, easier, and faster than the alternative which was driving the kayak to the beach! Passers-by used to look at me with incredulity and ask, “Isn’t that hard work carting it up the hill?” I said it was not as hard as lifting onto either a trailer or vehicle roof, strapping, etc.