Lisa I think it is something with the sun and its effect on the signals. For me I just set bin 254 yesterday and most of the channels were good. next morning channles like Nile Drama and ESC both are very bad (still signal but the level drops to 20-24%). in my case I am pointing to 121 and this has started to happen may be a week ago even with 253Bin. Now MBC, Aljazeera, nbn are the best level (they used to reach 60% but now they are only 40%).
So that is why I suspect that it is due to either to the new ECms or due to the sun's postion in this month