OK I've got it all working! Can't quite believe it...
After a lot of head scratching I got back out on the roof and reset the motor to 0 pointing roughly south.
Using my purchased copy of DVBviewer I then I simply entered the USALS type settings 'go to angular' and satellite name when scanning each satellite in turn. This works even with my cheapo Motek clone motor.
Hey presto when I then went to tune in to a channel it moved the dish quickly and correctly. Magic!
