In order to pick up WFSB reliably you'd need more than 25 db rejection of WCBS. The reflector on a McClapp is not enough to do that. GUM's stagger stacking will work, but gets complicated, and requires two identical yagis.
http://www.anarc.org/wtfda/stagger.pdf
A simpler scheme is to build a second McClapp antenna with reflector and stack it 29" horizontally from the first. When aimed at WFSB at 53 degrees the signal from WCBS at 213 will be 20 degrees off the back, and will be in the first null off the back of the antenna. Read about it here.
http://www.hdtvprimer.com/antennas/ganging.html
Precise aiming at WFSB will be necessary. That should get you the Patroits while WCBS carries the Jets.
Another choice for a second CBS is WRGB. A Y5-2-6 aimed at Albany and a HLSJ to join the yagi to your McClapp antenna should get two CBSs without reaiming. Unfortunately, WRGB usually carries the Jets over the Pats or Bills.