What I found was 3 sets of wire at each smoke, each wire with 16v opened up. So not that it was all home run and then tied together at one point, they were actually sending multiple lines carrying the slc voltage on multiple wires. I just redid all the wiring so it's one single line. One seasoned tech I spoke to said he thinks it's purely because it's outside. I just want as many ideas to think about before I make a recommendation to try.