I have a Slimline dish that has 3 feed horns on it so I assume its a 3 lnb.Is the only was to connect this to a DVR to record two programs at the same time going to be to run two coax from the dish? To convert this to a SWM I will need to change the LNB to a SWM LNB that has only one feed horn,is this correct?If I were to run two coax from the dish will I need a BBC for each coax or not at all?Thanks for any info.