I kept hearing something funny with my constellation and when I tapped the crystal I was hearing a rattle. The caseback was so loose I was able to tighten with finger nail. I don't feel like dropping $100 on a case opener just yet (not sure I would know how to use) as I am a rookie. Are there any go to watch guys (outside $$$$$$ retail shops) in Houston, Texas? Thanks, Charlie
Tighten it with a rubber ball. Or buy one of these specialized rubber balls. Totally safe. https://www.amazon.com/Watch-Case-Opening-Inches-CWR-779-00/dp/B0058EDAUA
I bought one at one of those everything is a dollar stores. And they have different characters, BONUS !!