Tripod Heads For Sale How Can I Keep My Tripod Head From Unscrewing On The Tripod?

How can i keep my tripod head from unscrewing on the tripod? - tripod heads for sale

My ball keeps unscrew the tripod head side to adjust the camera. How do I get my head on the tripod with more precision, without dragging around me? I do not want to make a permanent change, if need be.