Bras. Yeah. I have my own love/hate thing with them. I hear you.

The fit issue? It sounds as though this particular bra may not be the absolute best for your body. However, if it is the one you are most comfortable with, adjust it at will! (Many women do. Don't let it bother you.) I'm glad you were able to find a nice sales person to guide you through the (very confusing) process. You do look very nice with your enhanced shape. I find for myself that when my breasts are rearranged to be back where they started life I look younger. You may find the same is true for you.

Best wishes.