Well he was licking his feet alot and I wanted to move him onto a food that had no corn...but it's been a few weeks on Natural Balance now and he is gassy and has really soft mucosy stool, so to be honest I am kind of regretting changing him 

 and may go back but to RC but a different formuler. (he was on puppy 33) 
I'm trying to rule out what else may be causing the poopie issue but I should have stuck with the  RC. His poop was fine and he had no gas at all.