I was just curious if anyone else has tried putting on of the $2 Noodler's non-flex nibs into a Jinhao pen? Any success? The only other record I found was also a failure in this Ink Nouveau comment, http://www.inknouveau.com/2014/01/noodlers-non-flex-6-nibs.html#comment-1212641063. I tried on one of my X750s without success.it was a little harder to get to start into the section. Even once I go it in it was significantly off the feed. I did not do anything further to try to force or coerce it because I did not want to damage the nib. Comparing it with the Jinhao afterwards, the metal is noticeably thicker on the Noodler's which is very likely why it did not want to slide in easily.