Streching Shoe Widths

[Salad]

Buy a decent stretcher. One with metal parts. Don't bother w/ anything made of plastic if you really want to crank down on it. Get stretch spray too. I got my stretcher from shoecaresupplies.com. It's super heavy duty. I'm using it right now on a pair of loafers that I thought fit but it turns out are too snug. With nothing to lose (I couldn't return them), I've really cranked down on them and they do fit better but it's a work in progress.
Really, though, stretching is a last resort. Return the shoes if you can.