After Romain has locked we tried to make the hand-off to B1 PD3

we have measured the TF DARM_INPUT/B1_DC_INPUT  which was equal to 0.017 (it was 0.0027); the B1_SET was 0.0 

then we increased the offset to get the good powers on PD1 and PD2. the final offset is -7.8

the Hand-off worked without changing the DARM gain (the line 5196 will be left commented as the 5365).