Need some help to verify the Astro signal strength. Just installed Astro PVR with super pack 1. The installer did it very fast when I personally was not at home only other family members were in.

The signal strength received is only 163 for both Tuner1 @ Tuner2 on any clear day. Is this okay?, as per the beyond installation guide it says to ensure signal strength at least 180. The dish is on the roof edge, nothing is blocking it.

What are your signal strengths? Please advise & share. Thanks