Has anyone else had trouble with these? Since buying some just over a week ago, we have had five bad sleep-time leaks, necessitating a change of clothes, sheet, and mattress protector. We had never had a leak before. My dd is 5m, 14lbs, and well within the Size 3 weight range which goes up to 20lbs. I'm stuck with about 80 of the damned things and thoroughly fed up.