We tried to adjust the pump light in xtal 1, since it seems to be a little too high - no success, so we aligned it (and the mirror set in front of the amplifier) back.
Note: The original pump current for the diodes was 48 A (so, we set it to this value).
The original temperatures of the pump diodes were:
D1: 20 degC
D2: 20 degC (was: 23.8, so we set it back, since then the output power slightly increased)
D3: 24 degC
D4: 25 degC
The observed output power downstream the PBSs (3) and waveplates (3 HWP + 1 QWP) was 29.5 W.