Hi everyone...I'm need your collective help (if possible). I recently purchased a beautiful Parker Jack Knife Safety 2 1/2 Button Filler. The exterior of the pen is fantastic and the nib is yummy, but... ..I was only allowed to dip the pen for testing at the show, but upon getting it home, the filling system doesn't work. A sac would be helpful, but the metal cage that goes around the sac has become brittle and broken. Is there anyone that works on these and do I need to buy another pen now just as a donor (if I can even find one)? I'm afraid I paid far to much, now that I know this piece is broken. Do you think the seller knew it was bad? What can be done, if anything, to fix my expensive little gem?! All help is appreciated.