We mount back all preamplifiers
Initially we used all the PA coming from US, the repaired and the new ones.
There was an issue with the new ones (strong noise and cross talk)
until we realized that the new ones were of differential type
instead of unipolar. We decided to mount all unipolar so we use
the repaired ones plus the ones which were left here and 
had some minor problems with discharges.

We decided to change slightly the gain of the pulser signals
because for PA6 to PA10 the amplitude after the preamp was 2.2-2.4V
so it was saturating the ADC.
So we decreased Pulser 1 (RIKEN, ORNL1, ORNL2, CLOVER) 
from 690mV to 540mV (NEG) on the scope (50ohm)
and increased Pulser 2 (UPC) from 90mV to 100mV