Dr brown's nipples

Not sure how many of you all use dr brown's bottles but if you do and you have bought the stage 2 or 3 nipples for the wide neck bottles you will notice they aren't flat. There are ridges at the bottom which causes the bottle to leak. Don't waste your money. I called them and told them I had purchased 4 nipples and they were leaking. They said the ones in the stores have the ridges and the ones at their warehouse does not. She asked how many bottles do I have and I told her 6. She sent me 6 stage 2 and 6 stage 3 for free. Just wanted to let you all know not to spend money on them to just call them instead. Hope this is helpful to some of you!! 😊