Howdy, I got a Lamy 2000 a few months ago, and I absolutely love this pen. Unfortunately, I like to play with the cap, and have been turning the finial at the top of the cap back and forth in my free time. This is a no-no, as it strips the plastic inner-cap. Now the very top of the cap won't screw all the way in and the clip isn't held in place. Does anyone know where I can purchase a new cap? Tom