2021 Bighorn 38CB. I have the Winegard air 360 system. I am about 40 miles north of Houston Tx. I have ran auto scan on all 3 Connex TV's and can not get ABC ch13 or PBS ch8. I also get a channel 3 CBS which is Bryan Tx, 60 miles away. Is their anyway something is blocking ABC ch13 and PBS ch8. What can I do if anything? Otherwise I love my new home!!!