Bang & Olufsen MX4000 Service Menu (SW 2.0)

So I finally got the courage to open the back of my MX 4000 to get to the service menu (low firmware version, tried the 0, 0 GO and 1, 1 GO already; doesn‘t work).

I use RGB Scart on all my consoles (from RGC) and play mostly imports. I noticed that when using those cables + the imports the screen is shifted a lot to the left, cutting a little bit. I managed to configure a bit with the service menu but, although better now, it‘s still not perfect.

Is there a way to adjust the image on this set on the game video, so I actually see what I‘m adjusting? Or is there someone on the same situation with good settings for the adjustments?