New Astro City monitor - cant adjust vpos all the way down.

[mirkvid]

Hi all,

I've got as NAC with a Sanwa PM1745 monitor chassis and I can't get the picture to move all the way to the bottom of the screen. I turned the vpos pot all the way right, but there is still about a 1/2 inch space on the bottom of the screen that isn't used. If I stretch the picture using the v size pot, it'll cover that area, but the top of the picture is off screen.

I took out the monitor to rotate it today and took a look at the back. Everything was super clean and there is no secondary vpos pot. Would replacing the pot on the adjustment board have any effect?

Any advice? It's not a big deal with newer cave titles that let you move the picture via menu, but older games aren't using the full screen area.