I recently received a Monteverde Invincia. Beautiful pen, great feel to it. One thing that's weird about it. It came with a standard new Monteverde converter... one of the little green ones... which actually doesn't seem to fit into the barrel of the pen. Seems just a smidge to wide to fit, oddly enough. It came with a couple of cartridges, and those fit into the barrel, although it's a tight fit.
Has anyone else encountered this before with an Invincia? Did I just get the wrong size converter... or was the pen not meant to use one - just cartridge only?
I played around with some of my other converters and I also wonder... can I just use a spare converter from another pen? I have an extra Waterman converter that actually fits into the barrel, and it seems to fit the nib. Does that work? Or is that a nono. I'm new enough to fountain pens, that I'm not sure of the answer to that. Is there enough of a difference in the top of the converter between brands that it might leak where the nib connects? If I can just use my Waterman converter, problem solved.