Hello from Sweden. First time writer medium time reader. Just got a Wahl-eversharp Doric and it has some issues. The clip is missing, I don't generally use clips so that's a minor thing for me. The sac was completely dry so I removed it gently but some pieces from the lever mechanism fell out. They are all rusty. See image. A new sac is ordered and on its way. Can I mend this in any way? How else could I use the pen? It is a very beautiful pen so I want it functioning again.