I, too, have a blue Waterman Phileas. I think it needs to have water flushed through it to clear out clogs. It doesn't really work properly at the moment. I've never used the mechanism that came with the pen that you can use to fill it from a bottle -- if I'm remembering correctly, I can use that to flush out the pen?

I bought a cheap fountain pen once and regretted it. I rarely throw out a pen, but that thing was so leaky that it went in the trash.

I knew you had lost the original Phileas -- I didn't recall hearing about the Prelude being stolen. That stinks. And I'd forgotten about the rosewood pen. :-(