Does anyone else experience this? Instead of the heel sitting perfectly straight while standing in them, they tip inward. Like looking from the back of heels, they should look like this: | but instead they look like this: / Except not SO extreme... I've noticed this happens more with walking. Not in ALL my shoes though... some older ones became worn like that so they stay like that. I just bought some Guess shoes, just some inexpensive shoes I can run around in, and the heels are tipping inward. I'm wondering, is it the shoe, or is it me? Do less expensive (they were just under $70 at DSW) shoes tend to do that? I have like NO arc in my foot and I don't know if that matters. Or could it be the width of the heel? They're on the stiletto side but they're not ultra thin... Thanks!