Hello all!!! Can anyone here help me on a small issue.Up untill recently my box has been fine! but around say 3 weeks ago my picture is very pixelating sometimes virtually cant see anything and the sound is corrupt. I've heard this problem could be fixed in a couple of ways. 1st one is a standard RF TV booster.And the second one an Attenuator think i got the word right.If i was to buy an Attenuator which one would i acctualy need to buy as there seem to be different db gains on them ranging from 3 to around 10 maybe 20. thank you Wazza**