To those of you who have had their horses teeth floated and they are still dropping feed, did you have a local vet do the teeth, or did you have an equine dentist come out? While a vet can do the basics, often times they can't really "correct" a problem that the horse may have, they can just file off the hooks, and flatten the grinding surface. An equine dentist, much like a human dentist, specializes in teeth, and can often fix problems a vet can't, or can see a problem the vet maybe won't notice, and can thus do what's necessary to help ensure the horse can eat properly. I know that in Southern California, we have at least one equine dentist that I know of, who's pretty affordable. I would look into that, and see if that doesn't solve the problem.