Flow direction issue

 From:  jabber (JABBERMACY)
10387.1 
Can't get it in correct direction, what am I missing?

https://i.imgur.com/vDyYGup.png
https://i.imgur.com/YaZ2taF.png
https://i.imgur.com/Crq61lt.png

Also, I can't u/l file, was u/l ability removed?

AND it magically worked after choosing different picking point on curved surface??
I found this thread but I still don't get WHY it changes
http://moi3d.com/forum/messages.php?webtag=MOI&msg=5761.1

https://i.imgur.com/EOW3zgO.png

EDITED: 5 Jul 2021 by JABBERMACY