Summary Big step backwards as far as the output power of the 70W amplifier is concerned.

Prior to any adjustments, the input beam to the 70W amplifier is shown in "Before.png".  The lenses
matching the output of the front end laser were at the following positions:
AMP L04 = 155.5 mm before M33
AMP L03 = 210 mm before M33
The output of JAMMT suggested that both lenses move towards the 70W amplifier in order to make the
input beam smaller (and the right size).  The target beam diameter is 273 microns.

    The resulting input beam is shown in "After.png".  The 70W amplifier beam is shown in 806mm.png.
Clearly there was a flare in the output beam that I could not remove by alignment without having the
output power drop significantly.  At present the output of the 70W amplifier is only 60 W.

    As a result of the drop in power, the output of the pre-modecleaner is also lower.  I rotated
the half waveplate inside the ISS photodiode box to compensate.  With the ISS off, the DC output of
PDA read 11V.  Other than the beam alignment into the pre-modecleaner, and the mode matching lenses
to the 70W amplifier, no other adjustments were made.