Could the plip be modified, if wished, with a Dremel and a small cutting bur?
Davey, I have a Peterson straight billiard spigot that is every bit the equal of my Dunhills, Castellos, Former, Ser Jacopo and Ashton. I also have a Comoy and GBD from the late sixties that will stand up to the best out there; their equivalents today, new, would range for under $75; used on e-bay probably $35. It's about the tobacco and the technique.