The blue tube will always have a quite agressive blue bump, thing is to be able to measure low light, and correct it from 0% ire and up, not 20% ire and down.
I never manipulate 0% ire, so my guess is that with PC you set 0-255 out of the pc, and then depending your vims noise floor you select 0-255 or 16-235, standard vim normaly 16-235 as that let you lower brightness, clipping more of the noise, you set the g2 with a 5% ire 10% window, see its nicely looking on screen, and the raster is slightly elevated looking into the lens on all 3 tubes, thats a good start point start point