Why does the Dreambox 500s seem to need 70-71% signal strength before it will get a lock on any satellite? The other Sat receivers that i have can work perfectly well on 55% - 60% signal strength but plug in the DM500 and no chance. Is there anything that I can do (apart from increase the signal strength) to get the Drembox to lock on to satellites with lower % strengths?

Thanx & regards