I've had to stop using my Alubottle because after the 100th time of flinging kava water all over my floor and furniture, I had to accept that it was always going to leak. I don't think it matters how tightly I screw the lids on, one or both pieces seem to trap and release liquid whenever I shake it. I told anyone that would listen how great the Alubottle was when it came out but now it just makes me crazy. Originally, my only complaint was that it was a little too big for my seemingly normal sized hands. I had to switch back to my original AluBall bottle which also leaks (but not as easily), isn't quite big enough, and likes to destroy the Aluballs themselves. I just ordered the four pack of replacement balls and they very kindly sent me an extra one for free. It was as if they could sense that I would need it soon. Anyone had these issues and found a solution? Is it something obvious that I'm missing?