I have a Carene with an F nib. After inking it I can write about 3 full pages of a 7x10 notebook and then the ink flow stops. Initially the flow is wet, smooth, predictable, and lovely. But slowly, the writing dries up, the nib starts to skip and eventually the pen refuses to start altogether. This happens with the converter half full. I can restore normal writing by carefully screwing the plunger down to push more ink into the nib section (a procedure not always neat and controllable).
I've read many posts on similar problems with this pen. Most owners suggest flushing the pen with water + soap, which I've done several times, but the problem persists. I have also tried many inks. I don't believe it's a ink or nib problem. I believe that somehow the ink runs out of the nib section and what's in the converter is stuck there. I checked the tiny tube inside the nib section. This is the tube that supposed to suck ink from the converter. The tube is half plugged and half open, however, the plug appears to be there by design.
Does anyone have any idea how to make the ink flow normally from converter to pen nib? Is the little tube in the nib section supposed to be fully open?
Thanks,
Aldo