[PoisonIvy]

Sorry to hear it didn't work out well for you after all.

I have 2 Kangzhu cups with the airlock, I only need one. If you still have the pump and are interested, I could send it to you.

That's nice of you, but I actually think the problem is just me. The system works, but my breasts just so easily get overpumped or circulation cut off that I didn't realize that the pressure variance with those moments when it starts to lose suction and you have to repump it a bit were actually (while annoying) good for me in that they were what was keeping me from getting the circulation cut off and going blue vs continuous pressure, so unless I can get that to stop I don't think any airlock would really work. I think it's just the way my body is though.