This has made me curious so dropped a mail to Pelikan. Not sure if they'll revert but hey you never know 🤷

Ahh that's not good. Wouldn't have been that expensive for Pelikan to have a standard converter made for the pen.

The cleaning and refilling part helps me relax 😂.
But do let me know if the converter works on the jazz.

I kept refilling the cartridge. One of the retail person had told me that the Kaco K1 Ink Converter can be used but I did not try that.

It's a piece of beauty

I agree, TWSBI nib are quite smooth. And it's a quick start, I grabbed my eco after a month or so, and no dry starts.. It just writes.