A few months ago I bought a TWSBI GO specifically for long writing sessions. After a few minutes of writing I noticed there was a noticeable gap between the nib and the feed. Every time I press the nib down on paper the nib lifts off the feed and ink runs out from between the gap. To stop the ink from gushing out and fix the gap I have to push the nib and feed back into the section. At first I thought the nib wasn't set in properly but after completely disassembling and cleaning my pen the nib still comes loose.
My pen is a wet writer but I have never heard of a nib wiggling it's way out of a pen because of the amount of ink flowing through it. Is anyone else having this problem? Should I try a drier ink? Or any other suggestions?