I am still facing this problem on Travel XP, Makkal TV, 9xo, DD Metro and even in Channel 100 Airtel Home
As suggested by divakar_mba I just tried aligning 1 inch down alone since 1 inch left is not required for me because I have already marked my poles with a marker and its matching already. But the signal level decreases to 68-69 so I did not touched it further. I think technician will do it in a minute but we need to spend 150.
without disturbing the dish/ changing the position how cum some channels are not coming. I am pretty sure the dish did not changed the position since I have marked the movable part and the rod with a help of a marker already and its correct only.