Agree with Pete. Sounds like the normal gear backlash to me and is similar to the sounds of my normally operating 2009 model I2. If you are experiencing wheel wobble - side to side wheel wobble, you may consider rotating one wheel should there be some slight flexion in the rim. This is less likely in your new unit but not impossible. Check with your dealer if you have any remaing doubts on either of these issues.
Best of luck and keep gliding often!