Well, you've been helped by the best. Rabbit has a lot of experience. OTA FAN and Tim also have some good advice.
The only suggestion I could make is to get a Stellar labs 30 - 2476. It's one of the very few VHF High only antennas made these days.
I'm pretty sure it will help perform any of the other VHF combos. You could get a UVSJ and combined the VHF antenna with your other antennas without any penalties on the UHF side. Also, if noise is an issue or signal strength I could recommend a Kitz Technologies KT - 200 preamp. They have some other preamps but the main thing they feature is low noise. Low noise is very useful when you have a weak signal you're trying to pull. I am not a big fan of the Winegard LNA-200. Especially on VHF High.
If you would like there are several Facebook groups you can join:
https://m.facebook.com/groups/157627...60548120937415
Of course that is after you contact the station engineers and find out if they really do have a transmitter issue.