Ages ago (and no doubt past its warranty even if I could remember where I bought it) I got a Pilot MR (European version of the Metropolitan). It's a cartridge pen although last week I bought the right converter.
And although I really liked the nib, and found it comfortable - and I have tiny hands so I don't find many FPs just right for me - I somehow sidelined it.
Anyway recently got it back out, with a view to maybe adding a converter and trying my new Diamine Registrars' in it. As it's a Medium that writes fairly fine, and also the nib/feed can be totally removed to be cleaned.
I used a standard international cartridge in it (not Pilot's own brand as the European ones take the standard cartridges) and lo and behold, it leaked. Not a little. A lot. The entire cartridge worth of ink was, the next day, dumped in the pen top. Really annoying.
I pulled it apart, cleaned it and put it back together. Being careful to line up the feed centrally to the slit in the nib. Again - another leak. By the next day, about half the cartridge.
A quick look online told me that people have had problems not pushing the feed and nib right back as far as they'll go, into the section. So I tried that, this time. No leak for a day. Then a miniscule leak. I took the cap of and placed it in a small bottle, upright to see how much it leaked and also see if I could figure out where the ink is coming from.
But today - again - it has dumped most of the cartridge out.
Now I am pretty sure it is not leaking from round the cartridge. It is somewhere on the nib. Or the bottom of the section... I looked with a magnifier but I can't see any hairline cracks.
I really want to use this pen as I find it comfortable to use and I like the nib. I don't have any other Pilot pens I can make a Frankenpen with. I thought I'd solved it when I pushed the feed really as far as it could possibly go into the section but it only stayed continent a couple of days. And am still not sure where it's leaking from.
Anyone got any ideas? Or is it a lemon?
Edited by Pendarion, 11 August 2017 - 00:09.