Just got my Kontrol S2 today.
I've found that my S2 has some irregularities regarding the FX buttons lighting up.
In the FX 1 panel, the DRY/WET power button does not light up while the 1 2 3 buttons do.
In the FX 2 panel, the DRY/WET power button does work BUT the 1 button does not while the 2 and 3 buttons do.
Is this a settings issue or something wrong with my S2?