Just got my B.Yond installed. Installer told me that the old cables are better than the new ones and they are not required to change the cable. He just gave me the new cable rolled up unused. Are the installers required to change the cable for us ?

Signal strength is 222 with entry point #18. Using the default HDMI cable provided by Astro. Will PQ improve using the new cable ? Will PQ be better using a better HDMI cable ?

Is there a clear difference in PQ between 222 signal strength and 255 ? Will changing the cable improve signal strength ?