it is meant to be colour coded, ie yellow to yellow.
personally, i don't see the issue. it sits fine, when you stretch it to do it up the trifold fits fine under the hourglass. and as for the poppers at the back, if you feel it poking your fingers in, yes they feel bad. but if you spread the weight as a baby would be on it, ie the entire flat of your hand rather than points of fingers, you hardly feel it. and they're not even against the skin as poppers on some nappies would be.