Chastity and orgasm denial discussion

Hi everyone. After experimenting with a CB6000 for my penis, my partner and I recently purchased a Jailbird cage with a 1.5-inch diameter. We wanted to avoid the fluid buildup in my foreskin that happened because it was too compressed inside the CB6000.

Things were going well initially, but then the device fell off. The issue is that since the new cage fits me properly, my penis isn’t fully wedged or gripped. This allows it to slip straight out of the back while still keeping my testicles in place. There aren’t any spacers with this device for adjustment, but I don’t think adding them would solve the problem anyway. When relaxed, I have a very long scrotum (likely due to the Australian summer).

So here is my question: I’ve included an image showing an idea for improving ball capture. The concept works just like the current setup, except it adds a second base ring that extends backward toward the body. This should lengthen the tube and keep the device tighter against me by holding the testicles further back.

Is there anywhere to buy something similar or equivalent for my Jailbird? I’d prefer not to get pierced, and I lack both the tools and the funds to build this myself or purchase a full belt system. Help?