So, I received my new Diamond Mini the other day. After having the 1.1mm stub on my 580 for several months, and loving it to pieces, I decided to go one bigger and have a show-off pen for signatures, carrying around, and generally looking cool with. Strangely, the line produced by the 1.5mm is about the same width as, if slightly narrower than, the 1.1mm! The good people at Cult Pens (no affiliation; just a satisfied repeat customer) are going to sort me out, but I thought I'd see if anyone else had had an experience like this. http://i.imgur.com/ssDxY57.jpg?1