I don't know if it's the right place for this question but, here it goes: I have a Graf von faber castell intuition (elemento) rollerball, and never used it because I can't find refills to buy for it. The usual faber castell refills don't fit, and the magnum refills can't find them anywere in my country, only online, but the shiping is several times more expensive than their price. Does anyone else have any experience withe the intuition rollerball, to advice me on other refills to use. Does the Montblanc le grand refills work, ar anything else for that matter?