I have 2 Vivid's that have 2 section and 2 that have 4. They are setup on the floor in a 2-4-4-2 arangement.I have consistanly had problems with not all of them fading up. The 2 units that only have 2 section are on a different DMX address than the 2 units that have 4. They are controled by an Element board. Yesterday I selected the same color for all of them and faded them up. One of the units with 2 sections only had one secton on and one of the units with 4 only had 3. Sometimes they all work. The patern of the sections that do not respond is not consistant from week to week, at it's worst I had one 4 secton unit with only 2 on the other had 1, and the last unit in the chane had only one. All the units have power and do respond to any changes you make in the DMX address. Anyone have thought as to what might be going wrong?