Well, you do want your SPL readings to be the same from the primary seating position. The distances and dB levels on the receiver for each speaker can be different, but the goal is to have the same SPL from the desired seat. If your going back and running the receivers pink noise, and the Radio Shack meter has a 2+ difference between the left/right surrounds that is not right. How many times have you run the Audyssey? Maybe you will get different results if you run it again..
The first measurement you take is the crucial one, which sets the distances, dB levels, etc.
