I am new to using MCN nd have bought some tutto's for my 7.5mth old, she prob weighs about 7.7kg, so have set the tutto on medium setting as according to sizing. She is quite a petite little girl, so have tried different settings but they still leak. Around the legs and sometimes up the top. I know they are a high rise, have set the soaker for a boy as when using disposbales they were always wetter at the front and top. Still seem to leak any suggestions?