Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Easy check (and fix) for leaks

I love Avent products, and so does my baby. I was given an infant feeding set by a friend before my daughter was born, and when I choose to bottle feed when she was about a month old, the Avent system made the change so easy. I love how the system will grow with my baby.However, I did have some problems with leaks so I did a bit of testing to determine which part of the assembled bottle was faulty.I discovered that some of the teats still had little bits of silicon left at the base from the manufacturing process (I'm sure there's a name for that!) which was preventing them from sealing properly.Easily fixed - just run your finger around the inside and outside of the base of the teat, and if there are any bits of silicon sticking out, pull 'em off!