Using the latest drivers on my pc based sat system i can see that on some channels i am getting a 70% noise and 30% signal rating. The noise rating is very high on the channels with broken picture. I have an lmb with i think a -4 or -5 noise reduction. Would buying a new lmb with with a lower noise reduction capability make any difference to my improving these individual channels? all other channels on same transponder are fine just the odd one or two on each satellite.