I have a black female that has progressed nicely through obedience and basic formal training. been using the y-drill to help her marking skills and its helping but it seems that she lacks drive and focus on every retrieve. i havent been able to get her on any live birds yet and i know thats really important. will the bird factor help her drive and focus, or can drive and focus be trained. this is only my second dog and the first one made me look like a much better trainer than i am. i appreciate the advice.