I flushed it out anyway and stuck a cartridge in it and it wrote ok considering but then after a page it stopped writing. I took the cartridge out and had a look at the nib, it is slightly hooded type, and it had moved outwards (so the bottom side of the nib itself was no longer touching the pen) so I wiggled it and it started to come out. I've managed to straighten the nib itself but it isn't sitting snug where it's supposed to be and every time you put slight pressure on, it lifts up again.
Do these nibs 'lock' in or something? Or is it beyond repairing?
Can anyone help?