Sounds like your belt pulley is loose on the X motor. Check the 2 small set screws, they sometimes work loose in shipping or after a few initial prints. 3d printing involves some small knowledge of the machine, just like operating a clothes washer requires knowledge, or bike ownership requires familiarity with basic maintenance tasks. The Mini is one of the most reliable and maintenance free printers out there, but all printers require a small amount of maintenance and troubleshooting from time to time. It is the nature of the hobby. Lulzbot has a very good and thurough tech support department, and there are plenty of people in certain forums such as this to help set issues right.