Welcome Daniel!
For what it's worth, the QS series are very forgiving speakers in terms of placement. One inch may be pushing it a bit, but remember that you will more likely perceive spacial cues by what's being emitted by the tweeters... and you DO still have a down-firing woofer there as well.
I would say that if you CAN tilt them down a bit, it would be the safest bet. But honestly, you might be OK with them just close to the ceiling as well. Many of us have had success with the QS series in less-than-ideal rooms and mounting locations.
In addition to a
bracket such as this, if you're handy you could always build a slight wedge-shaped "box" to go between the wall and the speaker.
