Quoted from radium:Make one. Marco sells the wire and a bending jig. I’d rather have the correct part but sometimes stuff is NLA.
Unfortunately, this isn't possible—it's not a wire piece. It's a metal ball guide.
The part number is I believe A-10712, and there don't seem to be any available searching on the internet...
If I were you, @mfdavis1, I'd reach out to Marcos about possibly recreating them (from listening to podcasts with the folks who run the business, sounds like they're receptive to requests from the community, in terms of sourcing parts).
And in the meantime, find a way to grind and smooth that metal piece so it's not gonna chew up your balls, and will feed correctly during play. If you'd like, I'm happy to pull the glass off my game, take the plastics off, and send you some clean photos of how it looks, how it should fit in a stock game, and what the exact measurements are. Feel free to message me if you'd like.
Maybe there's something comparable out there, but in terms of part number, this is the only game that I can find (via an admittedly quick search) that uses that part. Finding someone parting out a beater is always a possibility!