Weird DoDonPachi Daifukkatsu / monitor problem

[Urabutbl]

Hey, not even sure if this belongs here, but I thought if anyone knows about weird Cave-problems, it's you guys.

So I just go a "new" New Astro City cab with a 1p cp and MS9 set vertically, which was supposed to be my shmup cab, and I ran into a weird issue. I hooked up DoDonPachi DaiFukkatsu 1.5, and I can't get the picture to fit on screen - specifically the horizontal width, which since the screen is vertical means I can't see either the top or the bottom of the screen. I have to choose to either see my score or my bombs.

OK, so I google and find that what I assumed must be the answer, the dip on the monitor board must be set to wide, but nope, it's on narrow. I swap it over anyway, but no help there. Then, before I start messing with serious monitor stuff, I decide to check some other PCB's. And... Alcon, Gunsmoke, ArcadeSD, Namco Collection 2 (sadly, I don't have another Cave-PCB to try)... they all fit fine on screen. It's just DDP DF that's screwed up. I've also reconnected the DDP DF a million times, thinking it might be the connection, but nope. Small problem at the end of the day, but I did buy this cab specifially for shmups. So... any ideas?

tl;dr: DDP DF won't fit on a Nanao MS9-screen, but other vertical games will.

[SuperPang]

I assume you've adjusted the size pots on the remote board in the CP? The PCB also has screen positioning in the test menu that may help.

[Urabutbl]

EDIT: Turned out I needed to turn the h s lim pot a quarter turn. Hate messing with those things...