If you're making gains on a particualr routine, milk the crap out of it until you hit a complete plateau.
So many people workout without changing a thing and make no gains, and won't change up. Don't be one of those people.
I've made consistent gains in size/strength (from about april > august) doing PHAT
Monday - Upper body power (Low reps/sets)
Wednesday - Back/Shoulders (Most painful workout ever)
Friday - Chest/Arms
(As previously said in the thread somewhere I've an ongoing left hamstring problem, another month and I can hammer them up again!)
Having come off of ephi and paying more attention to diet again, I'm going to be running this until the very last scrap of gains are to be made!