Welcome to Tatasky ..
Well u have to adjust the settings for each DTH.. every DTH STB or any other Reciever have differant settings and differant PQ ,some have deep contrast, some have less contrast, some have blue tint , some have red tint.. . so we have to make a new settings for each STB/Reciever to get optimum PQ /AQ as i know..
Try once and get maximum PQ