Just keeping the relevant parts, but do you by chance post your UTF-8 messages two ways? I see some posts with an "X-RFC-NoArchive" kludge, and some without. I seem to have a lot less issues with the messages you post that do include that kludge, even though it has nothing to do with UTF-8.
As you can see above in your origin line, it didn't display correctly in this specific message, but in other messages it displays as it should.
Regards, Nick
--- GoldED+/LNX 1.1.5-b20161221 * Origin: thePharcyde_ distribution system (Wisconsin) (1:154/10)