After installing a set of exhaust tips, I noticed that the pipes aren't lined up evenly in the openings of the rear valance. (it was this way from the factory). Is there a simple adjustment to the muffler hangar, or something else, that I can do? Or should I have the dealer fix it?

 

My favorite question!

Loosen the mid-pipe clamp and see if the tip will center in the bumber cut-out. If not, also loosen the over-axle muffler clamp.
Center the tip, then tighten from back to front.

 

Sounds like you heard this one before! Thanks for the tips as always!