I was using my #Kaweko Sport #FountainPen, and noticed that it was making an odd rattling sound. I opened it up to investigate and found that the converter had somehow come detached. Fortunately, the converter doesn't hold a ton of ink, so it wasn't as big a mess to clean up as I would've expected. Besides, are you really a fountain pen user if you don't have ink all over your fingers? I have to say, though, I'm impressed at the capacity of the feed. It had been rattling for some time without any noticeable loss of ink.