I have QS8's on the wall and I used drywall anchors. They look like a huge wood screw and the grab the drywall with gusto. I am in an older house and no issues what so ever. The nice thing is you can run them in a little farther, slap on some filler and bobs your uncle.

DOG is GOD spelled backwards.
What others think of me is none of my business.
M80 V3 MY GLOSS Cherry