Hi, I'm struggling to get decent pgb on my timezero using the DFF3D when heading into/beam on to any swell/chop. Maps a ruffled bottom, but works well in a following sea/swell. Stabilization is from a Sc21. The Dff3d is connected to the timezero computer via actisense usg2 with the lag settings on time zero set for 280ms for pitch/roll. I have the offsets for all sat compass/transducer settings as accurate as I can possibly get, with the centre of gravity estimated. I notice on transducer monitor that the dff3d pitch/roll is usually different from the TZ pitch/roll but is this because of the lag? Any ideas to fix the poor pgb? Thanks.