fountain pen cleaning question
I have a kind of stupid beginner's question on fountain pens. I have a waterman hemisphere, kind of new, and I wanted to clean it just now to change colours. So I took out the old empty cartridge, held the nib section under the tap with very little water flowing from it, not a heavy stream (I don't know how to better express this in English, sorry) till the water that came out of it was clear and not blue anymore.
So then I took some paper towel, dried it of and held some against the up side of the nib. There appeared a small blue and wet area on the paper towel a few times, before it stopped. Does that mean that I should have flushed it a bit longer?
And afterwards I put in a new cartridge, but it doesn't write very well. It writes watery, even after some scribbling with it. Will this go away after more writing, or is there a better way to dry it?
With my plastic safari I am a bit less careful, but this pen was a graduation gift from my mother-in-law for my ma and msc, so I really want to keep it in good condition.