Anderson,
I will show my ignorance in the sausage area and give you my technique on 40 to 50 pounds of brisket (3 or 4 briskets in a six rack).
I monitor the temperature of the bottom meat rack with a chamber probe. This is my smoking temperature. The upper racks are not as hot. the smoke cools as it passes by each successive brisket and the top chamber temperature is much lower. I just continue to smoke as if I am only cooking one brisket on the bottom rack. When that brisket reaches the desired temperature, I pull it out and move everything down one rack, repeating the process until the last brisket comes off. I got tired of juggling racks and this works for me on brisket. I find no difference in the first and last brisket to come off.
Translating to sausage, the top rack will have a slower temperature rise, but it will eventually hit the right temperature as it progressed down. A unique property of the Bradley is you can discontinue the smoke at any time so all sausages can receive the same amount of smoke. If this were to be applicable, it would save time, pucks and electricity.
Just a thought and may not translate to all of you sausage maestros needs and times. What do you think Pensrock, Squirt, HR, KyNola, KevinG?
I do not want to come across as a know it all or that I have a better method by posting the above. I would like to learn something and understand your techniques and reasoning.
Good luck and slow smoking.
Pachanga