The alignment has been improved changing the set point of some quadrants. The tuning has been effective for coming back close to 30 Mpc. The 270 Hz peak is still there but slightly lower.
A good control filter has been found for DIFFp_TX. This works fine in the present quiet conditions, but probably is not the best one when the seismic noise is high. Anyway, the accuracy we got tonight is the best ever achieved.