I have been conducting Pump leak rate test on 1260 Infinity II (G7112B, 1260 Binary Pump) Module. Lab Advisor version: B.02.10  SP1.
I have tested it several times, but result is always the same (Primary Channel(s) leak(s) somewhere), see Picture 1.
I replaced almost all the spare parts (AIV with cartridges, OBV, Pistons, seals, capillaries, Purge valve and etc.) with exclusionary principle, but problem was still alive.
Than I changed the configuration to "Without Damper and Mixer", it passes every time, when I do the test, see Picture 2.
What should I check to solve the problem?