http://www.petexpertise.com/item--Ea...k_harness.html
The above link should take you to what I have purchased for Wosie. Unfortunately, I am having a fitting problem with her, too, so I need to get my sewing machine out and make some adjustments to it this weekend.
It has a design where the leash snaps in the front off center towards you, so that if they pull, they actually turn towards you. I can't wait to use it for "heel" training, as I am sure it will work great! I just wish they made them in extra-extra-small so pups could use them without alterations!
I got mine at Petsmart and paid too much because I wanted it NOW. And I can't use it, lol, until I adjust it, duh...