Loose mirror

If its for your Barracuda, look to see if the glass is held in with a snap ring.Some has a snap ring others don't. If so remove ring and glass. There are 2 screws that may just need tightened,or you may have to shim the ball stud.Also a article in Mopar Action Magazine stated to drip super glue in the ball stud area, after it dries if the mirrior is not in the correct position the superglue will take up the slop and make friction when you break it loose to adjust. Never tried the super glue myself.