S90: Buyer Beware...

So I was having a lot of trouble finding the rubber pads for the handlebar mounts.  I thought I'd lucked out when I found some mounts on eBay that had the rubber included and in good condition.

But of course, these mounts turned out to be different than the ones I have, and only the bottom rubber washer fit.  The top one was too narrow.

At first I thought maybe I should just swap the mounts I have for the new ones, but they have a little peg at the bottom, which I assume helps to hold a handlebar in place.  Obviously that wouldn't work in my case.