Ok, finally got my amp JL 600/6 and audiocontrol LC6i. The installer is having problems with the party mode. We can't seem to get all six channels going discreetly. Party mode button will switch between front and hatch or just the rear passengers. What we like to do is have the six channel amp powering all the 6 speakers (Focal coaxes for the rear and hatch, focal components for the front). Any suggestions? Thanks