Introductions discussion

Alright, let me explain where I’m coming from. I am a young guy who has been enjoying chastity and femdom dynamics for the last few years, but I’ve hit a snag. About a year or two back, I was eager to experience locked up life so I purchased an authentic CB 6000. It took me several attempts just to get it on correctly (my cock gets erect almost instantly once that first ring is secured, though that’s not the main issue). Once I finally managed to put it on using the largest ring available, my testicles would turn a deep purple or nearly black and ache significantly, forcing me to remove the device after only a few minutes. On one occasion, the metal band snapped simply from wearing it while having an erection. Additionally, my shaft never fully sits inside the cage; even when soft and with the tube filled to the brim, about half of it remains exposed. So I searched online and picked up several Chinese replicas to experiment with different dimensions and profiles. However, they all seem too small in one way or another. Most feature a base ring of 50mm (based on various guides and calculators, I believe I need around 60mm for comfort), yet I haven’t found many cages offering that specific ring size. Furthermore, the cage needs sufficient length; otherwise, it becomes too bulky to wear daily. Any advice on finding something suitable would be greatly appreciated (preferably budget-friendly, since I’m still a student and can’t justify the cost of a custom piece). P.S. Apologies if my English is poor; it isn’t my first language.