Now the pen has returned and indeed functions flawlessly. As it sported a customized nib I asked Mary to keep the nib for fear of it being accidentally exchanged by the factory. And so she did.
I think it's great for a pen company to have such a contact person. As we all know, not many companies do, and if they do, they're normally customer service representatives without any clue of how to disassemble a pen. I am sure the success of a company like CS rises and falls with the presence of company representatives like Mary. May she hopefully continue forever to serve the community of CS lovers.