Still can't stop the wet orgasms

I have been where you are... I managed to get though it though and you probably can too!

It took quite some effort and I still go wet once in a while but now only once in 20 sessions or so.

For me it was about relaxation. I also though I was all relaxed, then I identified the right muscles and learned to relax them and... behold... dry orgasms. I would guess (without knowing) that before you go things are actually starting to tense up.

One way to find those muscles are traditional masturbation. Do an edging session and pay close attention to the muscles in your lower stomach during as you get closer to the point of no return. I eventually learned to relax them during the edging and thus back off ejaculation. This "muscle" knowledge then applied in a aneros session turned wet to try. The eding session is easier as you can control the stimulation directly.

Is anything causing friction with your "member"?
Also, I focus (in my minds eye) on my prostate. Imagine that it is a ember that is getting hotter and turning from red to orange as your get more aroused. Try to forget the penis if possible, closing your eyes helps.