I've disassembled my 0-9 match unit to clean and un-hack it. It seems there were some rubber grommets on this where it mounts to the board. I have only remnants. Mine does not have a bell but I'm assuming that's what they were for originally.

I see the grommets listed as R-111-29 but I don't see them available anywhere. Unless someone can point me in the right direction. Has anyone replaced these before? Are they much different from a grommet at the hardware store? That's what I planned on using.

stepping-unit,-continuous.jpg

I'll ask them. FWIW a 5/16" OD, 1/16" thick grommet from the hardware store was a good fit and works for now. It looks like the originals probably had a wider flange unless they were just squished flat over time.