In the last couple of runs, we noticed the M6_A1(the 89th) wire of V1 plane was noisy or missing. And in Run#1247, M6_A1,A2,A3,A4,A6 were noisy. I just checked in the Hall A, M6_A1,A2,A3 wires were removed, which means the empty channels give noises sometimes. Is this because of low threshold? The threshold is 2V at the moment.