Hi I just bought a SPM040551200 with Victron Solarcable L=5m/6sqmm MC4-M/F conn. (PV-ST01). The water tight cable box has fittings that are too small to fit that cable (with contacts removed.) What type of connection and cable am I supposed to use? The dealer I used is a certified victron dealer, so I thought they would tell me if something was wrong, when I mailed them before I placed my order. 
