Those knobs are definitely cool and look like exactly what I'm looking for. I somehow missed literally all of the replies to this thread, so I'm glad I just happened to come back to it to bump it.
If you still have the knobs and the offer still stands, I'd love to get my hands on them. I'm thinking I could probably even make molds off of them very easily and cast extras.
that's definitely a really interesting one. I wish they provided more info on the shaft type and all that, but I guess to be fair they probably only mean it to be a replacement for missing knobs on their gear