Product review (4 stars): A good replacement for the originals, but still a primitive design.
These are so simply made: just two tubes, one running inside the other, with grease in between them. The are in the Form of automotive shock absorbers, but sooooo much more primitive on the inside. They do reduce the amount of rocking that the tub does with unbalanced loads, but there is still some banging once in a while. The originals weren't any better, I'm afraid.