New GroovyMAME user :)

[adder]

....it creates a modeline with the exact resolution at slower refresh rate but not that slow (around 57hz)....

if you are using an arcade monitor it should be able to cope with higher scan rates than usual. that would mean you can get closer to 60hz

you can try, by changing:

crt_range0                15625-15750, 49.50-65.00, 2.000, 4.700, 8.000, 0.064, 0.192, 1.024, 0, 0, 192, 256, 448, 512

to:

crt_range0                15625-16400, 49.50-65.00, 2.000, 4.700, 8.000, 0.064, 0.192, 1.024, 0, 0, 192, 256, 448, 512

if you dont get a working/stable picture, you could try to go lower, eg:  16300 ...  16200 ...

[adder]

.....Since my TV does not have option to resize horizontally (I know it's weird).....

unfortunately i have used many different brands of tv and have found this to be very common. perhaps out of 10 tv's i would try, maybe 3 would allow horizontal resizing. currently i use a really good JVC tv, allows many adjustments... but no horizontal resize.
 

[Doozer]

Hi,

There is a coil on the chassis that is used to scale the picture on the horizontal axis. (look here: http://www.arcaderepairtips.com/2010/04/21/adjusting-the-horizontal-width-coil/)

DO NOT USE METAL TOOL, USE PLASTIC TOOL

Good luck

[adder]

There is a coil on the chassis that is used to scale the picture on the horizontal axis.

iirc i dont think that's present on all tv's, but sometimes/more likely present on older tv's