Thanks for the new report. Your old report puts you in Ottawa IL near the Walmart and Goodwill N of 80. Your new report puts you near the aqueduct where it crosses the Fox River, if I did the estimate right.
The FM report looks better as interference goes, but the TVFOOL report looks a little worse because WWTO looks even stronger and your weak signals are a much weaker. The greater difference between the strongest and the weakest means that it becomes more difficult to receive the weak ones.
The strong signals will overload a preamp and create spurious signals in the preamp that will wipe out the weak signals.
WWTO has a Noise Margin of 69.9 dB, which puts it in the Possible Overload category. If you add the antenna gain of 10 dBd (12 dBi) it is now at 79.9 dB NM in the Overload category. If you then add the preamp gain, the tuner is probably overloaded.
Interpreting Noise Margin in the TV Fool Report
http://www.aa6g.org/DTV/Reception/tvfool_nm.html
Have you grounded the coax and the mast?
The coax shield should be grounded with a grounding block that is connected to the house electrical system ground with 10 gauge copper wire for electrical safety and
to reject interference. For further compliance with the electrical code (NEC), the mast should also be grounded in a similar manner to drain any buildup of static charge, but the system will not survive a direct strike.
Notice that I have put "to reject interference" in bold type to keep WWTO from causing any more interference than necessary. It can get directly into the TV cabinet and it can get into the plastic case of the preamp.
This is not an easy problem to solve. Are you willing to try some experiments? The experiments will tell us what is possible to tame WWTO with what you have, or if a custom filter from Tin Lee will be necessary.