Tony P in Florida
TVWBB Fan
I needed a clever title. That's the best I could do 
Fourth cook. Cooked up three racks of baby back ribs.
Meethead's Memphis dust on two of the racks. The recipe with salt. One rack had the Memphis dust plus some heat. For the heat, for every
tablespoon of Memphis dust, I added 1/4 tsp chili pepper and 1/4 tsp cayenne pepper. This is about 8% of the volume is based on heat.
Each rack received approx. three tablespoons of dust... The rack with heat received three tablespoons plus 1.5 tsp). Each received Approx Two on the meat side one on the bone side. Membranes removed.
Two racks were done in 4 hours. The third rack needed an extra 20 to 30 minutes. Rotated the grate approximately every 30 minutes. Cooking temperature was pretty close to 250 the whole way through. I do the poke trick and the internal temp was at 200°.
Ribs were served dry. We served some Sweet baby Ray's Original for some dipping. I really like the extra heat in the rub. It wasn't too overwhelming.
As you can tell by the photographs, I didn't really trim up my ribs on the end. Since they look kind of pointy
I learned the rotating grate trick from @Brett-EDH. Also got some ideas about heat based on his rub.

Fourth cook. Cooked up three racks of baby back ribs.
Meethead's Memphis dust on two of the racks. The recipe with salt. One rack had the Memphis dust plus some heat. For the heat, for every
tablespoon of Memphis dust, I added 1/4 tsp chili pepper and 1/4 tsp cayenne pepper. This is about 8% of the volume is based on heat.
Each rack received approx. three tablespoons of dust... The rack with heat received three tablespoons plus 1.5 tsp). Each received Approx Two on the meat side one on the bone side. Membranes removed.
Two racks were done in 4 hours. The third rack needed an extra 20 to 30 minutes. Rotated the grate approximately every 30 minutes. Cooking temperature was pretty close to 250 the whole way through. I do the poke trick and the internal temp was at 200°.
Ribs were served dry. We served some Sweet baby Ray's Original for some dipping. I really like the extra heat in the rub. It wasn't too overwhelming.
As you can tell by the photographs, I didn't really trim up my ribs on the end. Since they look kind of pointy

I learned the rotating grate trick from @Brett-EDH. Also got some ideas about heat based on his rub.