I have a Denon 4311 that has XT32 (You obviously know that). I have a dedicated home theater with excellent wall treatment throughout and I am running a 9.1 setup. My main speakers (LCR) are very efficient (Klipsch LaScala LR; Heresy C) and the rest are either bookshelf or in-wall/ceiling type. I just finished Audyssey auto setup and after I checked all the speakers including my subwoofer with my SPL meter, in order to bring all the channels to the same meter reading, it was necessary for me to adjust most of the levels. I did this by using the Denon 'channel level adjustment's test tone'. During auto calibration, I use the recommended 8 mic locations discussed here on this site. I use a very small tripod as you suggested.
A couple of questions:
1. Did I do the right thing by adjusting all the channels to make them the same SPL reading?
2. Why didn't Audyssey make the proper adjustment during auto setup, in regards to channel level?