bug in Mame32 frequency auto?

[caskad]

Hello from france, sorry for my poor english

It's my firts post, and first question but:

I 've finish my mamecab, under winxp and soft 15khz (hd4350), i've created multiple modeline for ma kortek monitor, and during my test i ve discover a problem on MAME 32 0.135

when i let mame choosing resolution (auto), it give me @60hz resolution... but ive created the exact refresh for the game !

exemple:

Double dragon (224x240@57.4) mame choose 224x240@60 HUge difference (speed up :s)

i 'm searching around google, everybody looking for correct resolution, OK, but the refresh rate?

trying AVRES: correct resolution but no refresh rate.. same probleme
trying Mame Resolution Tool, but "run-time error 13" (but i've install the system.zip)

so my question is:

how to fix the mame resolution tool probleme? is there a way to download a ini file.zip with correct resolution, or fix it by hand for each game Oo ^^

Thx in advance

merci beaucoup !