Here is how to aim a antenna ,
http://www.kyes.com/antenna/pointing/pointing.html. WLOS VHF channel 13 is at 12 degree magnetic compass , WMYA UHF channel 14 is at 56 degree magnetic compass , WNEH UHF channel 18 is at 80 degree magnetic compass. That puts WMYA in the middle , thats good. I have a question , What antenna are you using??