Try something simple first. What happens if you rotate your antenna more south to favor FOX?
https://www.antennasdirect.com/clear...ntalplane.html
Trees really mess-up UHF signals.
http://www.hdtvprimer.com/antennas/siting.html
Scroll down to Trees and UHF.
If that doesn't work and FOX is very important, you would need a more exotic (expensive) solution.