Seat post clamp/wedge parts help

Hello peoples,

I recently got into cycling and purchased a used 2020 Jamis Renegade C2. Love it so far, but when I went to adjust my saddle height I was unable to re-tighten the seat clamp/wedge mechanism. Now, for nearly two weeks I have been unable to ride because of this. Any ideas where I can find a replacement part? My LBS is a Jamis dealer and has contacted them, but has not gotten a response a week on. I can’t find specific references to this part in the bike manual and can’t really find the part online either.

Attached are a couple photos of the part. For a longer story, here’s what happened: This problem started when I went to adjust my seat height, something I hadn’t done since having the bike set up. I unscrewed the bolt in the seat post securement mechanism completely and it fell to the ground, which I didn’t know I shouldn’t do. After adjusting the seat post and putting the bolt back in, it would not tighten and confusingly wouldn’t loosen either. A mechanic at my shop got the bolt out somehow, I think by pressing on the whole wedge from inside the seat tube. He recommended I not try to use it again. During either time messing with it, nothing fell out onto the ground (beside the bolt itself) or was dropped inside the bike frame.

Thanks for your time!

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