bump your warm side back to 90. Cool side should be 78-80. 74 is too cool. He will almost always feel cool to you. Remember your body temp is 98ish. Anything cooler than that will feel cooler to your touch. Also can you be sure that he’s not using the warm side at all? He might go over there and you don’t see it. What are you using for hides? Is one bigger than the other? If so make them the same size. Identical even. They will pick security over temp.