Don't know if it helps or not but i have recently changed the cabling to the dish as i moved the position of the TV during decorating, i changed to PF100 which i got from screwfix, i also got a blank socket plate and drilled it out so the cables come stright from the LNB, through the plate and to the box without connections, my signal strength and quality seems permanently on about 80-85% which is higher than i had before and get a really good picture.