Bootleg,
From the dmarc, there is a 3 way splitter--2 legs to your renter, and one leg to your house- Have you checked the splitter, because there will be 2 -7db ports, and 1 -3.5 db port. Your leg should be on the -3.5.
Also, is there a reason for having legs going to 4 vcrs and 2...