Might explain why I'm able to hear KYBY 23 miles away in a dead spot for KCYB. Of course, I've heard KCYB at Sugar Land Mall, 30 miles away.
KYBY and KCYB fight it out in the Willowbrook Mall area.
One thing that might help KYBY's coverage to the southeast is that the antenna is 338 feet above sea level, while the area along FM1960 is around 120 feet above sea level. Also KCYB is 393 feet above sea level which could help it to the southeast as well. Not huge terrain differences, but perhaps enough for a little enhancement.