Actually I'm not a fan of the narrow foam neck, but I bought it as an experiment... if I don't like it, I have a spare driver and a transformer to upgrade another 6000 to a 6100, as well as possibly a spare pump body.
Roger, is there more than one version of part 245.14?
I seem to recall talk of a cup and riser with a wider foam neck coming available a couple of years ago.
While I'm thinking, would the cup from a 3130 fit a 3140, even if some adaptation was needed?