I expressed interest on the shmups forum (different username). Are you only going through the list of users here or are users on the shmups forum on the list too?
Not sure. It's a a Nanao MS2930. I've been using this manual (https://wiki.arcadeotaku.com/images/6/65/Sega_Blast_City_Bass_Fishing.pdf). Instructions for adjusting the monitor are on pages 49-50, but I can't say that i understand most of it.
I’m trying to connect a 360 to my Blast City via vga cable. The 360 is set to 480p and I set the dip switches on the Blast City to 31 kHz vga. The picture I get is divided in the middle (see image). What could be the cause and how do I fix it?