I know this is minor but I must vent! We have a selection of sistema twist top bottles for the kids to take to school. We have about six because the kids often leave them at school and we need extra in the summer. We have them in a couple of sizes but all the lids are identical so we don't have to hunt in the drawer for the right lid for the bottle. This was all great until last week we bought a new one. The neck is slightly bigger than all the others and the lid is slightly bigger too so it won't fit on all the old bottles! But it's only about 2mm difference so it's impossible to tell quickly. Why have they done this? Do sistema hate me?