Settings on monitor Sony PVM 14M2U CRT

[DreyMIX]

Hello,
I can't find the right setting with my Sony PVM 14M2U monitor.
I have tried various configurations, but the screen is never aligned correctly.

Currently used:

• Raspberry Pi 3b
• Recalbox 18.07.13
• Gert-VGA VGA666 Adapter Board
• VGA Male to BNC Male Adapter (5 BNC. 3 RGB + 2 sync H / V)

This is the configuration in the "config.txt" file:

disable_splash=1
disable_overscan=1
gpu_mem_256=128
gpu_mem_512=256
gpu_mem_1024=512
avoid_safe_mode=1
kernel=zImage
overscan_scale=0
disable_audio_dither=1
dtparam=audio=on
dtoverlay=vga666
enable_dpi_lcd=1
display_default_lcd=1
dpi_group=2
dpi_mode=87
hdmi_timings=320 1 16 30 34 240 1 2 3 22 0 0 0 60 0 6400000 1 
hdmi_group=2
hdmi_mode=87

I believe that the problem is of the "hdmi_timings" line, in fact even with other values taken from the web, I always get unsatisfactory results. But isn't there any way to put the correct values based on my monitor?

Thx!

[DreyMIX]

Can anyone help me?