XRGB mini question/s and your console set up?

Hello, I just got my xrgb mini today and have hooked iy up (scart cables to a shinybow scart selector) Im currently using my snes at the moment. I have a thin line thats semi transparent that runs across the screen near the bottom. Just wondering how to remove the line.

And if anyone can share there set ups on the xrgb mini for:

Snes
Genesis
neo geo mvs
n64

Its actually 3 bars top middle lower left to right easy to see on white backgorunds, like a scan line is missing or something...

Change V_WIDTH from 32 to 33.

Thanks was actually at 33 moved to 32 problem solved. Very much appreciated. Problem solved!!