Hmmm… that might be more behavioral. If it is urine – definitely see a vet. But just poops – is there anything different about his environment? I would put litter boxes in those 2 spots that he is pooping in. One of my females poops in a litter “area”. She is 4 years old. She likes large litter boxes. As long as she has enough large boxes, she’ll go in them. If I give her a smaller box, she’ll poop in it, and around it. Another pair I have poop in their food bowl, and if I don’t put enough hay in their litterbox, they’ll poop on the ground next to the box. So sometimes there are preferences that cause that behavior. Do you feed him at those other two new poop spots? If so – be sure to feed him IN his litterbox. Rabbits like to poop while they eat. I only feed my rabbits their pellets in the litterbox. If I give them a dish of pellets outside the box, they’ll poop while they are sitting eating the pellets.