Oh it's good to know how to fix this when it happens. I have around 18 pens or so that use the CON-70 and I like it so much it's one of the reason I went with Pilot as the primary brand in my set of pens.
Matt Armstrong (Pen Habit) once told me at a pen meetup that he doesn't like the CON-70 and that every one he's had eventually ends up with this issue. Thanks for sharing the fix!
I love the converters because they hold so much more ink than Sailor or Platinum's converters... (And especially the CON-40/50.) I like the pump mechanism because you can always get a 100% fill unlike a twist converter which leaves a bubble. I've also found a quick way to clean them -- I blast water in via a 10ml blunt syringe while simultaneously pumping the mechanism. It's fast!
I get a little sad when other people don't share the same love for this converter. And I get a little sad every time my Sailor or Platinum pens run out of ink which is all the time because they barely hold more than half of a Con-70.
In the end I just wish all these pens could take international converters because I believe those are 0.9 or 1ml as well, right?
Edited by JunkyardSam, 18 May 2018 - 20:12.