I own a beatiful Visconti Rembrant red pearl finish fountain pen. Recently I noticed the barrel was not closing on the pen properly after refilling. The barrel is not a screw on type, it's more like push on type. I took a loope and noticed a small crack right at the edge. Due to the crack, the barrel diameter expands as I push the barrel onto the metal part of the pen. It is very lose and I can't write with it. How do I get it fixed? Or can I get a replacement barrel from Visconti? Is that possible? I Google searched but got nowhere. Nothing on eBay either in terms of replacement parts. It's a great pen. It was my very first one when I got into my fountain pen addiction Any advice will be very much appreciated.