I agree with pulling them away from the back wall. Can you get them 3 feet from the back wall? Or even 2.5 feet (but, then you'll need to adjust the distance from the side wall so they are less or more than 2.5 feet...you don't want equal distance from rear and side walls).
Also, you don't mention toe-in angle. Are they toed-in or not? Start with the drivers airmed directly at where your head would be. Listen. Gradually...like 1/2" at a time...rotate them out, and listen at each adjustment.
Also, you don't mention toe-in angle. Are they toed-in or not? Start with the drivers airmed directly at where your head would be. Listen. Gradually...like 1/2" at a time...rotate them out, and listen at each adjustment.

