UFT made John Deere 400 series carts for them, I got new slip cluthces for PTO shaft a year ago, At our Deere dealer, ANd we have UFT 400 bushel cart, I think UFT has been bought out by someone an no longer exists
W and A Manufaturing bought out UFT they still have parts for most models. Phone n870-534-7420. All orders are cash upfront or c.o.d. I've had good luck with them the couple of times I needed parts.