Just finished smoking a Certified Angus full packer from Costco on my 640, every time I go to Costco I look thru their briskets, every so often I’ll find an Angus. Usually smoke 3 fulls at a time but, this time it was just a single. I upped the temp this time from 220 which is what I usually smoke at to 235. I also mixed Cookin pellets 100% hickory with Bear Mountain hickory, 50-50. Still lacking on the smoke, next time I’ll either go all 100% hickory or use same 50-50 mix and add smoke tube with 100% hickory in it. I don’t wrap until their fully cooked then I wrap in butcher paper and into the cooler for 3 hrs or so. I only use Kosher salt and coarse ground pepper. Oh yah, I always put a water pan rite over the burn box.