Vertical monitor with AVGA - horizontal game question

[Paladin]

I've got a vertical mounted 25" arcade monitor, a PC with an AGP ArcadeVGA, and I'm using MAME .103.

My issue is with horizontal games, the right side of the screen is getting chopped off.  I've run the resolution tool with vertical monitor option checked, and set up the mame.ini to the recommendations on the Ultimarc website.

For a couple years I've been using an old setup with noname mame .63, and only 300 or so games.  I couldn't ever get the resolution tool to work right back then either, so I manually went into each horizontal games .ini file and changed them to hwstretch 1, effect sharp and resolution 288x640.

Is there some simple thing that I'm doing wrong here that's preventing me from getting horizontal games to display the full width?  I'm changing my cabinet to use a new front end and a full ROM set, so editing every horizontal .ini file isn't a realistic option.  I wouldn't have thought that I'm the first person to have this problem, but I haven't been able to find anything with the search function.

Any help would be appreciated!