Rob, last I measured mine it was 205. Running on was only due to lean mix causing hot spots in the chambers. Once RR tuned and needles re-profiled it was fine and never ran on again. (It's now running too rich but that is a different story and my fault for tinkering - soon to be RR-ed again when Sean's exhaust arrives).
I was told by several engine builders that under no condition is dieseling / running on a good thing. Even if it's able to pull fuel through the carbs when switched off, there should be nothing hot enough in the chamber to ignite it. Otherwise that is also happening when you are driving and it'll be causing knock that you can't hear / detect.
What do I know as a weekend warrior, I'm just relaying the advice. It does make logical sense though.