Some observations I've made.
1) My briskets take way longer than the time advertised in the Trager recipes, each time I have to bump up the temp so we're not eating at 21:00
2) My controller displayed temp, and the internal smoker temp are pretty much the same after 30 minutes. (as per Thermoworks Smoke)
3) Double wrapping if using butcher paper is mandatory. A single layer will tear through after getting saturated (see #4).
4) My last brisket had to be bumped up to 350 degrees for the final hour. There was at least a cup of juice still in the butcher paper after resting 1 hr. and the brisket was as tender as butter, so no harm done.
5) Slice the whole brisket while hot or you'll need a chain saw later.