I got called in on a church gig. They have an old but working Leviton NRD 8000 pack, and they got a donation of 2 used Elation DP 640B packs. I plugged in one of the new units and came out of the old pack (with 3 pin) and into the first new Elation pack, just to try it. The old pack has dip switches to make that pack channels 1 thru 8, and they have been working fine for years. But I can't get this new pack (either of them) to control any lighting. I thought it would be simple...I programmed the first switch (the DMX address) for the new pack at 9 (since the first pack is 1 thru 8), and then the 6 individual channels as 1 through 6. Should I have addressed those "new" 6 channels as 9 through 14? Was I right in addressing the new pack as 9? TIA.