Hi,
My name is Juan Pablo, I'm an audio engineer from Mexico who has been working in the film, t.v. and radio industry for some years. I've done a lot of audio cleaning, restoring and mastering for t.v. and radio ads, short films, government speeches, podcasts, etc. I can guarantee I'll reach your expectative, I'd happily help you get those files to sound clean and sharp and give you the settings you'll need to enhance those kind of files.
Regards