After a month of using the Ackerman Pump Pen with Higgins Eternal ink, I decided to clean it inside out, since this pen did not come with instructions I didn't know I could separate that piece where you insert the nib and the feed (the feed looks so rustic, as it was carved with a bread knife), so I tried to clean it with a metal piece, bad idea, I made a bigger hole in that piece, so every time I put ink, the ink would just leak from the nib, even though it was just a millimiter of shaved plastic its just ruined, well, I disassemble the pen again to clean it and, I put the feed under cold water and as soon as I scrubbed the feed with my fingers, it just broke, now is useless, or isn't? It better not, it was $35USD and a three month waiting period for this pen to arrive just to die in the first month. That says a lot about quality in this pens...