Chastity and orgasm denial discussion

I’m currently using a Bon4, the standard (small) size. It fits perfectly and I am extremely pleased with it. However, I have one issue with its design that is probably common to all other “soft” cock cage models - they pinch too easily in specific spots, which stimulates the frenulum. After being locked for some time, as you know, it becomes quite easy to ejaculate even when you don’t want to. I don’t want to cheat on my keyholder, but it annoys me that it’s so simple. Has anyone else found a solution? Perhaps there is a way to strengthen the lower part of the cage while keeping flexibility elsewhere? I considered adding extra padding between the main cage and the small ball-splitter bar, but maybe others have better ideas. I look forward to your responses. Thank you.:)