Why are you using Diseqc 1.2, instead of USALS?
I have to, as I have a 36v motor, and a V-Box II.
If using Diseqc 1.2 try going into the menu, Setup, Service Searching, Tuner Configuration, and select Tuner A.
Scroll to Satellite, the press the < > buttons, to select a satellite, you then scroll down to the option not to use USALS, and allocate a number, for the satellite, different to other numbers already used.
You then go to Positioner Setup, move the dish East/West, to find the satellite, then save it as the same number you've allocated to it.
Once you've done this for all available satellites you can start scanning in the channels, or download a motorized channel list.