Greetings from Durham, NC:
Sorry for the delay in posting.
I spoke with Lem Butler this morning about this. Lem worked with CCC roaster Kieran Ionescu to develop Twin Cities Express for use at the 2007 SERBC competition (which Lem won; yay, Lem!) ... hence the name Twin Cities Express: an express ticket to the
USBC competition May 2-5, 2008, in Minneapolis, MN).
As such, TCE was designed to be prepared at 200 degrees (competition temp). Lem uses 18 grams in a double basket and suggested resting the coffee for a week before brewing, which is all pretty consistent with what other folks here have noted.
In another thread (the Gaggia/Aficionado one), I posted CCC head roaster Tim Hill's suggestions of 17 grams @ 199 degrees.
Thanks!
Best,
Nathan