There have been several posts here about this, you may want to search and review them. Young Again has been known to cause poop issues...horribly runny, stinky poop often becoming full on diarrhea. I used it when I was first transitioning my girls to wet, and it was fine for awhile, then I got a new bag that caused the poop issues I had heard about. That makes me question quality control. It's like playing Russian roulette...will you get a bag that is okay or will you get a poop-bomb bag?! I never gave it to them again.
You have probably read here and on catinfo.org all the reasons why dry food is not the best choice. If you feel that you need to include some dry, I would recommend Dr. Elsey's Clean Protein Chicken which is between 4 and 5% carbs. I used it for the rest of the transition and never had issues. I felt better about the ingredient list, too. (My girls have not had any dry food at all in SO long. I really need to update my signature.)