Dear Ladies and Gentlemen of the Fountain Pen Network Not too long ago I bought a marvelous black Sheaffer PFM III. The pen came with an architect nib but was advertised as an extra-fine. Well I bought a new old stock nib unit in extra-fine. Unfortunately my pen writes only for about two pages of normal DIN A4 coppy paper before running dry. I had cleaned it two times which increased the range of my pen from about half a page to two pages. Maybe the change from Pelikan 4001 blue black to Montblanc Mystery Black helped as well. I also used a thinn wire and ran it through the snorkel tube as well. But the wire wasn't thinn enough to be able to clean the slit in the feed of the snorkel. Before continuing with difficult cleaning procedures I wanted to ask how many pages of DIN A4 coppy paper you can approximately write with your PFM's? And if you run dry does your pen still shoot ink out when you operate the filling mechanism like mine does? Best regards and wishes, sincerely, L. B. Hart