Very low downstream power levels

My modems signal page says my connection is poor. When I look at the downstream power levels they are all quite low. This has been going on for some months. My speeds are fine and my corrected and uncorrected counts are low, so it looks really good except for the power levels. The modem is a Netgear CM3000. I have MOCA 2.5 in the house. There's a brand new 70db MOCA POE filter at the demarc and another one on back of the modem. The splitter at the demarc is a brand new MOCA 2.5 compatible Amphenol unit, as is the one where the modem and the ASUS MOCA 2.5 adapter sit. All the connectors and interior coax cables connecting the modem and MOCA adapters are brand new and specd for MOCA 2.5 compatability. Its worth noting that the MOCA is a recent addition and the power levels were bad even before MOCA came into the picture, so I don't think the MOCA equipment is at fault here. I think I need someone at Xfinity to have a look.