Large Brahmas are very slow to mature. Mark Peterson, in an article he wrote in the ABC handbook, says two full years. Your birds may just be immature. Also the heads on big birds don't look so freakishly massive as on Bantams. All that being said.....if your birds truly do lack width, it won't magically appear. You will have to get a bird in that does. Not necessarily a male, a female would do the same thing. Be patient, give the birds time to mature. If age does not correct the type issues, pick up a bird or two in the fall.
From reading your posts and corresponding with you, I gather patience may be an issue for you. To be successful in exhibition poultry you will have to learn/develop patience. Improvements can be made every year. However, it can take generations of birds to get to where you want to be. Once you get there, there are ALWAYS things that can be improved. Enjoy the process. Pairing, breeding, hatching, raising, conditioning, showing, meeting and forming friendships with other breeders. I will say Large birds require more patience than bantams as bantams are much quicker to mature. Did you ask Darlene how old your birds are?
Tim Lindenborn