Im also working on my male problem. I start wit 2.6 and after few months the males get heavy as hell. Each week during cleaning i take males out to leave just 2 per group and put the extras in a feeding bin to be fed later on to snakes.
I was thinking of trying to add Mazuri Hog Pellets into the Kent Rodent Feed. But not sure if its worth $15 25lbs bag of the hog feed.