The FF instruction manual indicates that the factory drills two holes on each side of the body for the windshiels placement and that you simply use a streight edge to draw your lines between the holes and then cut your windshield slots. The body I recieved from FF does not have these holes, it does however have two divots on each side of the body. Should I use theses divots to pilot the drill and what size drill bit should I use? Thanks for any answers.