The weekend has not been good for the laser and I didn’t get to investigate the coupling at HAM2 more, complete the PEM injections I wanted to make, or even look through the viewport. I attach a plot from Friday’s work showing that shaking by about a factor of 10 at HAM2 produces a couple of features 3 or 4 times above the DARM noise floor. The second figure shows the results of heavy shaking.