As mentioned in alog 11488, I had pulled the ALS EY REFL common mode board. I have modified the second boost stage so that it is the same as the first (pole at 100 Hz and a zero at 1 kHz). The serial number is SN S1102632. In detial:

• C119: from 100n to 1u
• R78: from 82 to 165

The board is now back in the rack and the TFs look good.