Went to EX this morning for transmitter module maintenance. Tx shutter is working fine, OFS range is about where it was previously, laser output power has dropped very slightly (1.76 -> 1.73 W over 3 months), and the AOM diffraction efficiency is at 69% (not great but not needing adjustment just yet).

OFS Open Loop Transfer Function Bode plot attached below, along with the filled-out maintenance document. Rx beam alignment looks good.