Menu>setup>satellite and transponder edit>motor setup fine turn East/West.
On same page turn usals off and save as diseq position.
If I remember correctly!
The only problem with this is I have yet to suss out a way to backup/restore diseq positions.
Another option when you know which way to tweak the dish is to change the satellite position on the box or in the satellites.xml file. Does anyone know how to backup/restore diseq positions on the TM-600?