OK, JD... Back to the "basics." Don't try to overreach your, or your smokers', capabilities just yet. Sounds like you really tried to push the limits of the #2, and it didn't work out. It happens...let's move on now and learn from it! That's what this is all about!
Next time, keep it a little simpler with only one brisket. I just can't believe those were really "done" in less than 1 lb per hour, but OK. Had to be a packed house in that #2!
All I'm saying is to not try to over-do it, and work within the capabilities of your equipment. 2 big packers in a #3 is no problem, but not the #2. Just the fact that you could fit ONE in there whole is a feat!