X Gantry sticking on one side

Mid-job, my SO3 XXL got hung up on the left side of the Gantry, torquing the whole thing. There were some wood chips on the left Y rail that I cleared, but that didn’t help.

Had to turn off the steppers and manually move the Gantry back and forth all the way until it seemed to run smoother. Not sure what happened.

Any ideas? I’m afraid to run another job for fear that 1) it’ll do some irreparable damage or 2) my machine’s calibration might be all out of whack now.

Check that the belt tension is equal for the two sides

also the pulley set screws

Please use http://docs.carbide3d.com/article/41-machine-operating-checklist