I have a Caran d'Ache 849 and it is having issues writing continuously. I find that it starts out strong and wet after resting flat or even nib-side up, but after 1/4-1/2 page, the ink flow slows and sometimes stops. I have to unscrew the pen and squeeze the ink cartridge to get it going again.
I have changed the ink 3 times, flushed and soaked.
What is happening??!1?