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Adobe Audition spectral editor all the way so easy just like lifting a layer off in Photoshop.
Takes just a few min to get the hang of it but the easiest quickest way to get rid of any feedback and no affect the underlying track.

By the time you use an FFT analysis and FFT EQ cut things up and batch em back i will have cleaned the whole track and have moved on.

Too bad you can't post a audio sample here just to show how easy and effective audition is but after all is it just 2017...