At first I didn't think the wheat looked too bad then realized those heads are not goose-necked over and they are the wrong color of yellow. Looks like you did all you could - good stand, good weed control, etc. Kind of up to mother nature after that and she has been kind of fickle this year.

Good luck with harvest. We should start picking corn next week. Some have been going for a week around here with some of the shorter season corn and some of the areas that didn't get as much rain. 

John