Hey there, I have a Kontrol S4 mk2 that I've used for a while. Running it with a Macbook Pro. Last time I played, the CUE button was suddenly behaving differently: instead of my holding the button down to cue a track and then jumping back to the cue point once I let go, the track now simply keeps playing. Any ideas what may have happened and how I could fix it? (I should note that the Kontrol was on loan and the guy said he "may have" updated the firmware "or something like that." I myself do not now if there was a recent update or what the older firmware–if replaced–was. Either way I'd like to fix the problem!) Another, probably unrelated, issue I have is that the headphone output level is super low. The signal is there, but in a club it's hardly useful. If I switch the headphones to the house mixer and cue from there, the signal is loud and clear. Is this a known issue? Thanks beforehand, A.