Does anyone have a code for BOTH subs volume up and down. I have an old Harmony 520. The device for a X4000 has buttons for sub volume up and down, but it only controls the first sub. The X4000 has 2 subs. In the menu there is access to sub1 sub2 and both subs. I am looking for a code will do both. If need be, I will buy a used Pronto and learn the code from it, unless there is an easier way to convert hex codes to ir.