Darin,

there are a couple other things to investigate.  Please check your dog's bite to see if there are any issues with them being under or overshot as that can affect their ability to retrieve food from a bowl.

If the bite is level and there are not other dental issues you may consider elevating the food bowl to under chest height using a stand or other device.

http://www.orvis.com/p/stainless-steel-feeding-station/2KTL