Looking at the receivable Digital Tv stations channels both Canada and USA it looks like , WBBZ-TV REAL VHF channel 07 , virtual number (67.1-2-3-4) at 169 degree magnetic compass direction is very weak and is the Tv station to try for.
http://en.wikipedia.org/wiki/WBBZ-TV
WBBZ is very close to the in between aim direction that I recommended of 185 degree magnetic compass direction.
As always , the starting aim direction is the --> starting aim direction.
The antenna is then adjusted if required for best reception.
The 185 degree magnetic compass direction is a in between direction. In between the Tv stations to the , south west , south , south east.
And the 185 aim direction is close to the , WBBZ , 169 degree aim direction.