Some quick thoughts after just 3 songs:
-There is no problem with the bass on my system. It's nice and full.
-Mix is subtle. It's a very good recording. Clean without being too sterile. Nice use of echo in the rears, but don't expect a Scheiner mix.
-It's not weak in the fronts...
Thanks for the udpate! This pretty much confirms what I expected after reading the Petty article on the 5.1 mixing process (by mixer/engineer/producer Ryan Ulyate) of this album in Sound+Vision(mentioned on another thread). Waiting on the postman...