#1
I just looked at a video on youtube of a guy who had adjusted his pickup height on his strat andthe bridge pickup was almost to the strings.. and it sounded distortiony ona clean amp.. Well... is it a good idea to raise my humbucker pickup on my les paul clone to get more... Metal! out of it?
#3
Has quite the oposite effect really, the magnetic pull from the pikcups usually results in less sustain and the sound gets a bit muffled.

What video is this? Are you sure it wasnt just a cranked valve amp?