Hmmmm. That can be caused by a cable with too much slack in it under the gantry getting hung up on the fins of the heat sink.
To check for it, you need to turn the machine off, drop the front door, grab a flashlight and get down so that you can see underneath the gantry on the left side. There is a red cable that runs the length of the gantry, you can see it through the tube if it’s clean…locate that cable, keep your eyes on and slowly push the gantry back to the rear. If you see the cable catch on the fins of the heat sink or feel any resistance, stop. Don’t use the machine until you hear from support, they can tell you how to adjust it easily.
After you check it, you can let support know what you found. If that’s it, it’s an easy fix, but you don’t want to keep running the machine, it can damage the cable.
(Mine made a lot of noise at startup and it skewed the gantry every time after startup when the cable drooped. Pulling the gantry too far forward during a cleaning was what caused the cable to droop in the first place…I think we need to make sure when we are cleaning that we don’t move the gantry any farther forward or back than it normally travels during printing to keep from loosening it.)