I'm pretty new to fountain pens, but I've already bought 4 and given 2 away. Thanks B & B! Anyway, I've got a Lamy Nexx that seems always to have a smear of ink coming down he nib. That's not a big deal, since it has a black nib and looks pretty utilitarian. But, I also just bought a Laban Mento. I love it, and it has a "pretty" nib. It hadn't gotten any smears, until I somehow bumped the breather hole when I grabbed for it without looking. Every time I try to wipe it off, whatever I use just pulls up more ink from the nib and leaves a new smear. Short of flushing and giving it a "real" cleaning, what can I do?