Ok so my friend was so gracious enough to give me her $300 Madela Pump in Style Advanced Backpack Breast Feeding kit and all I need to buy is the replacement kit (tubes, attachments that touch your boob, 2 bottles, etc). I thought this would be easy but I can't find the "kit" anywhere. I see on the Madela website you can buy each part separately but I thought I would be able to register for that together and I can?t find it on BRU, Amazon, etc? Anybody in the same boat? What did you do?