AIRFLOW BUMPERS ARE A PAIN IN THE ASS

Today I worked on fitting the front bumper today and just don't like how its fitting. I also worked on the lights, lining them up is a pain in the ass too. My saab just throwing me curve balls! One of the studs in the rear bumper is loose causing it to spin so now i need to take the whole mount off to get the bumper off. I am having issues fitting the grille.