Mike,

Ken is talking about mounting the QS4s with the backs FLUSH against the ceiling, not hanging them as yours are. But, you bring up a good point. Ken, is there a reason why you CAN'T hang them, similarly to Mike's?

P.S. "I don't want to hang them" is a perfectly valid reason.

Jack

"People generally quarrel because they cannot argue." - G. K. Chesterton