I got this Parker 21 that refuses to take in or expel out ink/water. I've soaked the nib for days. The sac is still fairly pliable, but maybe not enough. I only managed to strip it down this far. Now I need to get the filler mechanism off so I can see if the feed is clogged or it's just the sac. Either way, the section has to come off and I don't know if it is screwed on or press fit on or what:
-jim
-jim