I've been using this MB 144 for the past year or so. It wrote well for the first 6 months, and then developed an issue with ink flow. This is a 1990s 144 with the snap on cap and stiffer nib.
I can write about 20-30 lines on an A4 sheet before it stops flowing. I have to then either shake the pen hard or unscrew the barrel and twist the converter each time to get ink back to the nib.
I really dunno what to do about it. I'm not sure whether the feed is clogged or an entirely different issue. Some people on FPN were able to pull off the nib-feed assembly without any tools, but it seems very tightly fixed in my case, and I'm not confident enough to try too hard lest I damage something.
What would y'all suggest I do? Is there a way I could solve the problem myself, or should I simply have it serviced by Montblanc?