I have hunted 22 for years and have been very lucky. I have never gone home empty handed from that great area. But they are drilling the hell out of the entire western slope. The exact location that I took a nice 4X4 Two years ago now is a drilling pad. Let me know what you find on your sept trip. I will be in unit 22 that third season.I usually hunt close to the unit boundry of 21 and 22. The rut is usually just getting started. The area is dry so find some H2O and some does and you will most likely find some good bucks. I have also had some great luck slipping through the small pine pockets on warm afternoons. Good luck, you have a great tag. Starman