newbie's silly query regarding device escapes

Hello all, It’s wonderful that these forums are here, filled with such nice people. I’m new to chastity and just beginning my experiments. Please bear with me for any silly questions.:) So far I’ve tested the Slave4master Turtle Cage, Soulock Bound Guard (escape-proof), and Soulock Trustlock Sentinel (also escape proof). Their designs appeal to me. Here’s my beginner’s query: Are there devices that truly prevent escapes? Even though they’re marketed as escape-proof, mine seem able to slip out. The ones I’ve tried grip my testicles well, but when I relax, I can slide the penis back in, especially with lube. I can’t fully remove the device because it cramps the balls between the ring and cage, yet that slipping potential is somewhat undermining its purpose. I’m a grower: flaccid size is quite small, while erect size is decently large. This means there’s plenty of loose skin allowing for escape. Should I try smaller rings? Or perhaps a different device entirely? Any advice would be appreciated. thanks!