7 X1 devices in my house - 3XG2 and 4 XiD - XiD boxes freeze with RDK-03053

Before upgrading my service, I had 1 XG2, 3 XiD and 3 cablecards.

I decided to exchange 2 cablecards for 3 more XiD boxes. Once I activated all the boxes, I received RDK-10000 error on 1 of the new XiDs, and RDK-03046 on the other 2.

I called xfinity and they recommended I replace 2 XiDs with 2 XG2s. Rationale was the box receiving the RDK-10000 was “in front of the amp” because for some reason many years ago, Comcast split the wire outside my house and ran 3 wires into the house - 1 to the amp in the attic, 1 to a TV in the basement, and 1 to where the cable modem sits. The other XG2 was because I didn’t have enough tuners to drive all the XiDs.

So, I now have 3 XG2s and 4 XiDs, and all 4 XiDs are frozen with error RDF-03053.

I’ve done some troubleshooting and found that if I unplug the XG2 in front of the amp, all the remaining boxes work. If I unplug either of the other 2 XG2s, 1 of the XiDs gets RDK-03046 (not enough tuners).

I just spent an hour on the phone with Comcast Tech Support and their answer was that XG2 and XiD boxes are incompatible... Huh???

So is the problem that 1) I can’t actually have 3 XG2s in the house, 2) I can’t have an XG2 in front of the amp, 3) the box is bad or 4) there is a config error.

Any thoughts?

Thanks.