My balls are like Houdini

[TheToy]

We bought a new metal cage last week with a shorter cage, the ring is hinged and quite honestly a squeeze to fit it on. So I'm amazed my left ball has developed the art of escaping so easily with little effort.
My only consolation there is little to no pain when it slips back through the rear ring, even though it is a tight fit.

[biggar]

I've found that it usually means there is to big of a gap between the ring and the cage. I had that problem for years with my plastic devices if I didn't get the right ring and spacer combo. Since being in steel that only happened once and I made the gap smaller. Hasn't happened since.

[TheToy]

Yes I think it is the gap between the cage part and the back ring, the design does not allow me to close the gap. So I have returned to the previous metal cage which is very secure.
Always surprises me how my balls can squeeze back through a tight fitting rear ring.