So this is my pen, a woodcraft pen kit I bought from an acquaintance in the US a couple of years back. Only, due to lack of knowledge and inadequate cleaning on my part the feeder assembly has become clogged up. I've had it soaking in ammonia for four days now, and even forced a fair amount of liquid through it using the ink cartridge but the main channel in the feed is still blocked. It hasn't discoloured the ammonia solution in two days and since yesterday it's been blotting out clear whenever I shake it. But still, the ink won't feed on its own, and when I advance the cartridge manually it just seeps everywhere. Does anyone know if this particular style of nib/feeder assembly can be further disassembled and cleaned, or failing that, what else can I use to get at whatever is still inside the feeder assembly? Thanks in advance. ~ Baenlynn