I've used Namiki cartridges...
January 12, 2015
I've used Namiki cartridges in both my Pilot pens, and although the color is
nice, after the cartridge is partly empty the ink seems to stop flowing well and
becomes rather sludge-like in the top of the cartridge. Both pens write on the
dry side, so this didn't help. Now that I have converters for both pens, I don't
think I'll be using these cartridges again. Live and learn!