Sounds like a good first smoke! What temp did you set the #2? Did you pull them at 5 hours, or give them a little more time? With my #2, I set the smoker at 225F and let the babybacks go for 4 hours without peeking. After that, I pull them and rub on some BBQ sauce for the last hour or so. If at 4 hours the meat is starting to pull off the bone, then I let them go for another hour. If not, then I let them go for 1.5 hours...the key is seeing the bone to know that the meat will fall off!
A little practice and you will have them where you want them! Cheers