I'm not sure what is going on with you, but I can offer some helpful tips. When you eat and you have good restriction, you have to chew, chew, chew and don't swallow until your food is mushy. The times that I PB are ususally because I swallowed a bite of food before it was small enough. I know for me I have to really pay attention when I am eating, because if I'm not that is the time that I usually swallow too soon. It's is also normal to be able to eat about 1 cup of food (give or take a little and depending on what you are eating) at a sitting. I have never really gotten "full" on just a few bites. I also struggle daily with my head hunger even after almost 3 years being banded. But to answer your question, yes you can PB even when you don't have good restriction. The biggest cause for me is usually not chewing enough.