@oli dobolli
I'm not sure if this pen can be dismantled but since you already took out the feed, I guess it can be done.
From what you describe, it seems like you will need to pull out with your fingers/pliers by holding the sides, not the top (nib) and bottom (feed), which was why you bent the fins of the feed. Then twist, wiggle, and pull slowly.
@oli dobolli
I'm not sure if this pen can be dismantled but since you already took out the feed, I guess it can be done.
From what you describe, it seems like you will need to pull out with your fingers/pliers by holding the sides, not the top (nib) and bottom (feed), which was why you bent the fins of the feed. Then twist, wiggle, and pull slowly.
I've not dismantled this myself before.