[Gabriele, EricQ] 

Finally, we managed to lock PRMI on sidebands:

• MICH locked on AS55_Q with gain -10. Demod phase of AS55=18
• PRCL locked on REFL55_I with gain -0.04. Demod phase of REFL55=88
• Triggering on POP110_I at 50/10
• Filter "1:5" of MICH engaged, this improved a lot the stability