The ones that had problems are the ones you knew would have problems from day one. Like they say, it's all about attitude. Stay out of trouble and study. Also, not all, but older guys and former military guys seem to have trouble mostly because they have the sense of entitlement. If you come with that, or act like a A hole, they will make it hard on you. Also it's true that they will look the other way now to help you get through if you show willingness to learn and be safe. If you know you're not thr best pilot, this is probably one of the best times in history for you to make it through training at an airline