Great info guys. The place where I'm thinking of putting the dish had a Sky dish before we bought but the wall runs along 7 deg east so I may well have to make up some spacers to get the alignment, good point. It's on the first floor with a flat roof below so easy enough to get to and adjust. I have a ship's compass in a box so with a straight edge on the disk, the compass and the current magnetic declination I should get somewhere near. I'm doing all the reading at the moment and looking forward the wednesday
