Picture is HUGE. Try posting something a little smaller next time.
Ribs look fantastic. I've done 2 racks on my 22.5. The first time I cooked a bit short and they were good but not tender enough. Second rack was much more tender, but a slight bit dry. I cooked the second rack at a higher temp and for a bit longer--perhaps 1 hour more. Made a big difference.
Just takes practice and knowledge.