Okay, more detail...
Assuming all the info provided in my previous note, let me add the following:
Done for my bunch is just past chewy. Nice and moist with a bit of bark. Twist a bone and it'll come out clean, anywhere on the rack. No sauce during the smoke, we sauce at the table, if at all.
I started this smoke from cold at apx. 10:15am, expecting to feed the family around 5:00pm, after a 6 hour smoke. I took two racks out at 4:30pm and they were pink, having not opened the smoker before then. Had to finish them using the oven and microwave. Not my best work.
Having left the remaining 4 racks in the smoker, I turned it up to apx. 240 on the dial and let the go for another 3 hours. They were still pink. So I set the dial to 250 (now 8pm Sunday night) and watched another 3.5 hour of bad TV.
At 11:30pm, I opened the smoker and tested the IT (now about 165) and declared this smoke officially done. They were absolutely the best ribs I've ever had. My wife smelled them, woke up and came out to taste and declared the same.
No PID yet, should arrive today. Have I answered most of the questions?
Thanks for all your guidance and insights.