[J_Norris]

Just to add another price-point: For those considering getting new ones, last month I got a set of 4 new rubber bumpers from Trailmanor that cost $17.36 for all four including shipping. If you purchase from Trailmanor, I'd measure the maximum distance between the screws and add some amount (a half inch?) and tell them over the phone you need them to be at least that length. Mine barely fit, I had to put them on in the right order or it wouldn't have worked because the screw distances aren't identical, so I needed to line them up by size to make sure the longest ones went in the right spot... and even so, 2 of them were a little short so I had to orient them a bit diagonally.

And they were just under a half-inch thick -- 15/32 on my ruler.