shoes fit better?? I've been thinking of buying a pair of pumps, but there there's a (quite small) gap between the heel of my foot and the end of shoe. Is there anything I can get to put inside so I can get rid of this space? One of my friends said that maybe an insole would work, but wouldn't that make it a bit too tight?? Oh, and I can't get a smaller size because 5 1/2 is the smallest size that the shoes come in (that's the size that fits me). Thanks for any help!