I have a set of HM341's sitting in my basement. I removed them for a gent whose '73 (
I recall) 750 I made rideable and, although I tried to inform him that they were in "OK" condition, he demanded the internet low $$ replacement that only took a ball peen hammer to get to fit properly around the stand.
I cleaned one up and it's actually quite beautiful. I can't speak for the others as they're still quite greasy. I think I'll take the afternoon to clean them up instead of working on that old KZ in the basement. If they end-up tolerable, I'll let y'all know.
I like my Hondas original as well...