hi, i've purchased a sky1a receiver in middle east whith a universal LNB; all thse was just working great till now; seems to me that this LNB may be damaged;i'd like to buy a double LNB to head to astra ans hotbird. Can i get one anywhere, means are all Universal LNB's working in any countries??? what about 0.3 Db: is lower Db better than higher??? 0.3>0.6??? please help a newbie; THKS