I am currently in direct contact with XForce USA.
Since this is not a Summit Racing issue, I asked them to supply me a contact number for XForce.
During the call to Summit, the representative offered 3 solutions-
1) return the entire system for warranty
2) return the entire system and receive a refund
3) knock some $$ off in order to get the repairs needed to correct the alignment issues.
THAT ^^ right there is what makes Summit so great!
Called XForce and at one point heard the words "we've never had a complaint about alignment on the Legacy's"
Maybe, maybe not.
I sent to XForce 3 pics of my concerns with the mufflers, a short video showing the system as installed and also a web link from MAPerformance that shows similar alignment issues from other installs.
Will continue to update as things progress...