So, now that the bike runs, I can pay attention to some other things.
My kickstand has been broken and repaired by having a literal 8 inch eyebolt welded to it. It works, but I have to hunt for it every time, and occasionally it gets tangled in the centerstand. The eyebolt clearly isn't replicating the shape of the original horn.
I have been searching, and found lots of stuff on broken centerstands and replacing them with K1100 or even K1200 bits. Less so on kickstands.
Is there a common replacement for these things? The 1100 kickstand seems to be a different shape. Does it work?