I posted the following comments in a more recent thread, but it definitely applies to your situation:
I recently purchased a new XD-9sc w/ factory installed Trijicon tritium night sights. The gun came with the front sight so loose that you could move it side-to-side in the dovetail with your finger. The rear sight was installed biased to the left as viewed from the shooting position. Springfield Armory authorized a return of the slide to fix the front sight, and, in twelve days' turnaround time, I received it with a solidly attached front sight, although they did not explain what the fix entailed, contrary to my request. Finally able to take it to the range, it definitely shot left, easily fixable by moving the rear sight to the right with a gunsmith's sight pusher. My point - although SA has good customer service, where the sight alignment and installation comes in, they may have some quality control isssues.