I mean I've seen other people complain about it before but I wasn't expecting it to be this bad. Our first batch of three 150ml anti colic bottles worked fine, so we bought more. But now after three months, almost every single one of the bottles seems to leak! Couldn't figure out why. All components are tightly screwed up together. We use the tommee Tippee microwave steriliser for them. Anyone has had similar experience and figured out why they leak and how to fix pls? Don't want our all nine such bottles to go out of use.... Thanks!