You are going to have a helluva time finding one of those. That one looks fine, what's the problem?
FYI I believe they are the same pill bumpers that early Meucci used.
I have a couple but I have to say they aren't going anywhere.
I don't even think Terry Bajorek has the pill bumpers and he pretty much has all things Huebler since he basically bought out what was left of the shop way before Paul died.
What is the issue with your bumper?
.