Dear Janet,
We are sorry to hear that you are not satisfied with your Everly Handles. We recommend that you place a small do of silicone to the lower side of the back covers, then slide it on. This will prevent them from sliding off or feeling loose.Please feel free to reach out to a Specialist if you have further questions. They can be reached at 800-964-4850 Monday - Friday 9am-6pm EST, or via email at customersolutions@deltashowerdoors.com. - Best, Delta Shower Doors Team