4f H4 looks clean except for a small wipe mark near 1 o'clock close to the
retaining ring.

4f H1 has streaks visible with green light.  Wipe spots between 3 and 6
o'clock.  Possible spot/damage mark in centre of optic.  Hard to see.
Try cleanroom cotton tip to wipe pump light side.  Drag wipe removed
centre smudge.

4f H2 has a streak mark around 6 o'clock near the edge.  Also has a
hard to spot streak lined up with 12 o'clock and is ~3 mm wide.  Not
visible with white light, only seen with green light.

4f H3 has a spot around 7 o'clock near the edge.  Does not blow off.
Spot is ~2-3 mm from the edge.  Possibly on the pump light side of
the optic.  Hard to get to with the quartz rotator in the way.

Re-examined 4f H4 with green light.  Smudge in middle visible.
Vague spot visible under green light from the pump light side.
Spots visible from the pump light side, not visible from the H3 side.
Drag wiped surface, spot is now gone.

Quartz rotator surfaces look good under white and green light.

Spot on resonator side of output coupler, a little more than half
way from the centre to the edge, around 2 o'clock.  Drag wiped
clean.

Perhaps out of an abundance of caution it was good that we examined
the surfaces with green light.  Certainly a few wipe marks that were
present and not visible under a bright light source, were just visible
in green.  It might be that the wipe marks are inconsequential but at
this moment, it seemed prudent to deal with them.

Replaced intra-cavity shutter blade with new model.  The shutter
blades shipped from Livingston do not fit the external shutter as
there is a handedness problem.  EXTERNAL SHUTTER STILL
NEEDS UPGRADING.

Front end laser beam centered through MM2 iris, slightly off
to the left of centre as you look at the MM1 iris.  It is not clear
whether or not the beam was centred in the first place.

12:46 (PT) Turned on front end laser power watchdog.

Original mode matching lens positions:
L02 = 13.38, L03 = 6.42
L02 = 14.26, L03 = 6.35

PMC we have an offset somewhere as it does not lock to the
maximum transmission level unless the power on the locking
photodiode is turned down below the nominal 1.5V unlocked.
Upon some navel gazing, the offset might be due to some light
in the wrong polarisation falling on the photodiode.

ISS - adjusted waveplate until PDA DC = -10.0V and 
PDB DC = -10.16V.  Zeroed ISS QPD; new readings are 
dX = 0.0005 mm, dY = 0.0013 mm.





Jason, Peter