Need some help from you Wambamboo experts. I have just bought some Wambamboo size 2 nappies. They feel lovely and look adorable, but I have just put one on my DS and I feel that the elastic around the legs doesn't come up far enough at the back - the nappy seems a bit loose where the elastic ends, and I'm worried it will leak. I usually use MEOS and they are a very neat fit around the legs. DS is about 17 pounds, but has a very flat bum (sorry pet). So do I just have to wait until he grows into them. I really want them to work for us.