I have cooked numerous spare ribs on my GOSM but never tried babybacks. I am prepping them this morning and cannot seem to find the membrane to pull back. Everytime I seem to think I have the membrane I pull on it and it tears like a price tag and doesn't seem to come off as one like my experience with spare ribs. Any chance the membrane is already off from the butcher? Is the membrane smaller or different than in spare ribs?? It just doesn't seem to come straight off for some reason.