Hi, I never rub ribs before starting them in an SRG so not sure where to go other than this.
Cook 35 to 45 mins then wrap in foil let go another 40 to 45 mins the remove from foil then place back in SRG for about 15 to 20 mins more to get them crispy.
I always cook naked first 30 to 35 mins then rub & wrap , back in for another 40 to 45 mins remove and then crisp
Let us know how they do