I own 9 fuzzibunz size small pocket diapers. They were all bought at the same time but are now being used to diaper their 3rd kid. I've noticed that some of them seem to still be super absorbent and other seem to leak straight thru the moment DS pees. All were stripped prior to use with this baby, anyone have any ideas what is going on and how to fix it? or should I just call the offending diapers worn out and get rid of them?