Doesn't seem to be too much info about it on the web:
from
http://www.kalibrering.no/instlist.htmElectrohome Ltd. - ECM1311 - Monitor, Farge, TTL og RGB input, 15 til 32 kHz hor.scan. - MON - ELEC
www.aminet.netTry MONspecsMUI from aminet, but READ THE INSTRUCTIONS BEFORE USE, and if in doubt, DON'T MESS WITH IT - as it can blow your monitor up if you are not careful.
Should be able to get those hi-res modes centred by adjusting the syncstart/stop and blankstart/stop values, but BE CAREFUL - you don't want to blow your new multisync up.
Good luck