Sounds like something may have gotten shifted during shipment. I would recommend taking the pump apart and then putting it back together. Usually, if something gets moved around during shipping, this will fix it.
Here is a nice and short video that shows you how to put the pump back together step-by-step including where all the bushings go. We recommend you watch the video once all the way through and then watch it again with your gyre at hand.
It is also a good exercise as unlike other regular propeller pumps, this pump needs regular maintenance to ensure optimal performance and long life.
http://blog.coralvue.com/maxspect-gyre-step-step-assembly-advanced-troubleshooting/