hey guys!

I seem to have a problem picking up any transponders from 11.718h upwards on astra 28.2e ....transponders below this i get 95%..some 97%......all the rest above this i get 43% ,is this a dish alignment problem or lnb need turning slightly?...any ideas guys?..i have only recently installed my motorized dish and thought i had it setup right,but tbh im having my doughts now!...... any 1 else had this problem?
cheers potster

ps only others i get good quality with above 11.718 are 11.738 and 11.777