add_if_required (channel_corrections, 4, -3); // Ls
add_if_required (channel_corrections, 5, -3); // Rs
add_if_required (channel_corrections, 6, -144); // HI
add_if_required (channel_corrections, 4, -3); // Ls
add_if_required (channel_corrections, 5, -3); // Rs
add_if_required (channel_corrections, 6, -144); // HI