question.. how do you remove the nib and feed from the housing? i try to remove mine and they just wont budge..
that said, i dont really have problem with PenBBS nib, they are pretty smooth despite being fine nib (asian fine, usually means western extra fine)... but i want to put in a stub nib..
Very carefully, grip the nib by the sides. Do not grip the feed whatsoever until the nib is out. And make sure there's no converter in place.
The feeds are VERY fragile. But the nib generally slides out on its own without the feed coming out. then the feed will be loose enough to remove, though I often don't even mess with the feed, the nib in my 323 just slides out with just the right amount of friction, so I nib-swap that pen without taking out the feed. and I have ruined the feed in one of the piston fillers by trying to take it and the nib out at the same time.
The BBS nib is unique. I quite like the upswept nib, they can be very smooth. Almost any #6 nib will fit the BBS feed, but the BBS nib will fit NOTHING but the penbbs pens themselves without modification due to the huge flat shoulders.