The maximum power after AOM double pass is 37%, worse than the expected 50% efficiency, but it should be enough.
The good news is, a new mode matching (RefCav and ACav) is calculated, and all positions for the lenses are clear.
I got all the lenses, and borrow one plcx-24.5-51.5-c-1064 from 58C
The problem about the position of the PBS is solved. It will be at the original place, since the clipped beam is the 0th order of the reflected beam which we do not use.
I'll put the lenses in their places and try to lock RefCav again.