Just a little update for those who need that info, i've done clipping calibration following Briomusic's tip on that, thanks to him, pretty simple procedure, don't know why i couldn't figure out that by myself

, meaning using Compressor Make-up gain for boosting the signal on the way up to the EQN, well the figures were looking good without doing nothing, well my trimmers were at unity when received, i believe that's enough for getting to a quiescent point, i trimmed a tad to get it to be precise, so if you don't need precision, then i believe you can skip that part, well that's on my side, but wanted to inform those who don't want to bother and maybe don't have the tools etc....