Man that sucks. Yeah you gotta vet these editors hard before you pay them. Ask for samples of their actual notes first, not just a list of books they worked on. A good editor will give you like a full page of feedback minimum for that price. Also check if they specialize in your genre cause a romance editor won't do much for a sci-fi story.

Did you mess with the exposure compensation slider too or just the ISO?

Have you tried using a spray bottle to mist the dust down before it floats around?

Tried that freezer trick last week and nearly dropped my clippers on the bathroom floor, so I guess I can add "clumsy" to the list of reasons my fades are lopsided. But the cold blades did make a difference, the hair stood up way better than usual. Still ended up with a few jagged lines though, nothing a little neck hair can't hide. Guess the old barbers had steadier hands than me.

Did you maybe have it too close to that drywall though? I mean mine works fine as long as I keep it away from stuff I'm not using, like I clip it to my belt loop instead. But yeah, anything magnetic near fresh drywall is just asking for trouble in my experience.