@chastitynoob I also had a CB6000S and that was way too big when flaccid, so I was able to achieve an erection, albeit restricted, but the JailBird stops it before it really starts. My point is that whilst I can achieve ejaculation whilst locked, it is totally unsatisfying, coupled with a strong feeling of disappointment and a "why bother?" quite apart from any guilt at trying to achieve something that I am denied by My Lady.
I'm not sure any modifciations to the JailBird would prevent stimulation with something like a Magic Wand - isolating the vibrations would be very difficult with any similar device. The nearest I got to this was with a home-made belt which was like a sports protection "box" (though rather more substantial!) and if the shaft was enclosed in cloth padding, no amount of external vibration could raise even the slightest flicker of interest
Of course if you can reach or approach orgasm with other stimulus, then you are not going to stop it with a chastity device - I can get very close to orgasm with nipple pain stimulation (I'm a masochist) - but I return to my original point, a fully restricting cage makes for a ruined orgasm, not 80%, - ZERO!