No problem found. A1 low signal at data logger input for horizontal 1. No repair attempted. Deployment 4 1. A8 vertical still bad. Swapping sensor pack with C3 during deployment 5 remedied the problem.
Problem appears to be with geophone pack.
Probably the vertical geophone has a damaged suspension and must be replaced. A1 has weak hydro and low horz1. Deployment 5 1. C1 with datalogger from A2 did not record anything. Probably the clock was glitched installing datalogger into sphere. A3 lost time reference at recovery or more likely during a frequency check.