Hi Sledge,
Ok, if your monitor is not the autoswitching type then you need to decide which of either ranges to use, and definitely the 15 kHz one is the one to choose.
All your vertical games run at 640x480 because if you remember from your above posts, you wanted to limit the total height used by MAME, so we set this limitation here:
monitor_specs0 15450.00-16050.00, 55-65, 3.91, 4.70, 6.85, 0.190, 0.191, 1.018, 0, 0, 248, 448
If you want to restore the capability of using higher vertical resolutions, set that value back to normal, like this:
monitor_specs0 15450.00-16050.00, 55-65, 3.91, 4.70, 6.85, 0.190, 0.191, 1.018, 0, 0, 288, 448
Or whatever in the middle, e.g. limit it to 256 lines in case you can't access the v-size pot:
monitor_specs0 15450.00-16050.00, 55-65, 3.91, 4.70, 6.85, 0.190, 0.191, 1.018, 0, 0, 256, 448
Then in mame.ini, set the corresponding custom line by using these two options:
monitor custom
crt_range0 15450-16050, 50-65, 3.910, 4.700, 6.850, 0.190, 0.191, 1.018, 0, 0, 192, 288, 448, 576
So as you see, it's up to you to decide which maximum height will trigger the interlaced+stretched mode.