It looks like you've listed virtual channel numbers rather than the real channel numbers, If that's the case, you're having problems with the weakest signals only. The best suggestion I can offer is to experiment with alternate antenna mounting locations & height.
You could also try replacing the LNA-200 with an Antennas Direct 'Juice' preamp which has a solid metal housing which provides nearly perfect shielding. But as always, reliable reception depends first and foremost on the antenna producing a quality signal at it's output. An amplifier won't do the antennas job.
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If the well is dry and you don't see rain on the horizon, you'll need to dig the hole deeper. (If the antenna can't get the job done, an amp won't fix it.)
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