That you have had problems receiving WCBS historically is not surprising. With your antenna aimed west (275° compass) you are pointing at both the real channel 33 transmitter on the ESB and the channel 22 translator.
According to you TVF report, WFSB is delivering a conflicting signal just 3 dB lower in power to your location on the same real channel. (Strong co-channel interference)
WLIW on real channel 21 is transmitted from the ESB also. Their signal is arriving in your area 12 dB stronger than the signal from the channel 22 translator. (Significant to strong adjacent channel interference)
In both cases you have quite a challenge. I think reception of real channel 33 would be the project most likely to succeed. Success depends on the antenna system rejecting the signal from 25° compass - and - getting lucky by not having some of the WFSB signal bounce off something in front of your antenna and therefore manage to 'get in the front door'.
For all we know, a new building has just gone up a few miles away and is acting as a reflector... just speculation.
Are you willing to consider building a stacked antenna array dedicated to CH-33, with the goal of achieving a precise null in the direction of WFSB? If you're not sure, take a look at
this information. (Yes, you could spend money time and effort, and not be sure of success.)