Feline Acne Remedies

Our snowshoes have been on organic raw diet (w/bones & organs), chicken, beef, rabbit, goat, lamb, etc. , as well as daily doses of L-Lysine since kittens; they are both a year old now. They always eat out of clean stainless bowls. The male recently started to present acne symptoms. Not just the "dirty chin" but I can feel blemishes (?) thru his thick fur on his neck & chest. He also seems to be irritated by something on the backs of hind legs. Would like to shave the fur so I can get a better look at what's bothering him.