so i unplugged the splitter downstairs, disconnecting the unused STB and connecting the moca bridge directly to the coax coming off the ONT's splitter, rebooted the STB upstairs, and I got good channel guides. I'm guessing my signal is being split too many times. Is there a way to boost the signal another way, or re-wire my setup?
There is no real way I will be able to run cat5 from the router upstairs to my computer downstairs, due to how the house is laid out.
Silly question, but since you didn't say you tried it, I figured I'd ask.....did you try to just reboot the stb upstairs before changing any wiring? Sometimes, as odd as it seems, that's all that's needed. Especially if it was working, and then you change some of the wiring (like, say, adding a MoCA bridge).