hello, got poor tv reception. got rf cable coming down to the living room this then goes into a rf booster whichsplits the signal into 3 outputs. 1 to sky plus box, 1 to the dvd recorder, 1 to the tv. the sky signal output 2nd goes upstairs and plugs into a tv link box with 4 ouputs, 1 to a bedroom tv. 1 to a second tv , 1 to a dvd recorder this then goes to another tv. itv seams the poorist then ch 4, bbc 1 and 2 not as bad. do you think i should upgrade the rf cables of each connection gold ones etc ?