After 5 nights struggling with advancemenu & advanceMame I'm getting desperate.

on my Arcade Cabinet (Original Pit Fighters with 25" Arcade Monitor)
I played around with advcfg and manually tried every possible parameter.
I succeeded in getting a still image but the problem is the starting point of the image is incorrect,
so I tried fixing it with the "Vertical Hold" pot on the monitor which worked
BUT now comes the problem each time I start advcfg or advancemame the starting point of the screen is
different?
Here is a video to clarify, in the video I use advcfg there you see the problem each time I start the testscreen.
[youtube]http://www.youtube.com/v/mTwYvduO51s[/youtube]
Attention: The video is 90° rotated.
I'm using:
-J-Pac board with a rage videocard.
-Monitor = Wells Gardner 25" GA63ADG25X (69X2084)
Used parameters:
Format 0.272 0.091 0.091 0.091 0.917 0.011 0.011 0.060
Clock 5-100 / 15.63 / 58.6 [this took me 2 nights ]
I'm not sure if it could be due to these settings
I did this with the help of
http://easymamecab.mameworld.net/html/win9815k.htmbut I couldn't find all the necessary info in the manual to do all the math (I attached a scan of the specs)
I also tried using the "Fraggal's Boot CD V3.91.0F"
but that was a total mess, files missing, faulty bat files, wrongly named files ...?
I can really need some help, please

thx in advance