Hello, I recently bought a new Duo4K. Very good box. But I would like to keep my good old Duo2, so now I have 2 Vu+ receivers side by side. And I have a stupid problem: when I send commands from remote, both boxes are controlled, and I'm not able to separate commands between one box and the other one, so I must always switch off from back switch the box I'm not using at the moment. Is it any possible solution? Thanks.