Ktraff

Just purchased the Milwaukee mud mixer and upon attaching mixing paddle noticed Everytime I released the trigger it would make a chatter noise like metal slipping over metal. It only happens when there is a paddle on drill. Also noticed it is loosening the Chuck if I don't crank the Chuck tighter than needed. Just seeing if anyone else has this issue, the Milwaukee rep seems to think it's normal but it's a cringing feeling on a brand new drill