Persistent issues with cage sliding down

I’ve had so many different cages. Loris, Rigid chastity and others. Steel and plastic and 3r printed. I hate plastic cages since they don’t seem like real chastity to me. I’m sure others here would disagree but for me it’s got to be metal, PA secured and well locked. Problem is even my best fitting devices slide down. When I’m slightly cool and things are fairly high and tight, the cage fits great. But the heat of the day causes them to slide down. I’ve tried smaller rings but even then the cage slides. Maybe I’m just not suited for long term chastity. I have too much physical change between cool and very warm and fully relaxed. My latest method to combat the problem is using support straps. However, the few I’ve tried are poorly made and disappointing. Anyone have suggestions for quality made jock style support straps? Looking for something that would attach to the base ring directly. And yes, I’ve tried regular athletic supporters but the give only partial relief. I want straps that would hold the base ring close to the body and prevent slide down.