After a week of build up about a surprise she had for me, my wife unlocked me and put me in a shorter cage (the surprise) she got a HUGE kick out of it and had a really good laugh. But that's another story. I really wasn't leaking much if at all in the first cage, but now I am leaking a lot in the shorter one. Is it the cage length or just residual affect of the mind fuck she gave me? I was really certain I was going to get to cum.
That wasn't my experience but I was dripping when I was first caged and she was getting used to teasing me. Moving to a smaller size likely had more to do what was going on in your mind and the excitement. She is a treasure, make sure she knows what she has done for you. Praise her. Worship her.