I had a similar complaint that my electric didn't do enough smoke flavor. At the recommendation of this forums, I started using a tube, and I've been really happy with it ever since. I see you got a tube already and are refining your process. I'm anxious to hear how your next brisket goes with the tube in addition to good pellets that you got.
Now I just got to figure out how to get a smoke ring from my electric.
Now I just got to figure out how to get a smoke ring from my electric.