David 3 / Spring 2 - Beater arm is rubbing on the side of the loom

If you are experiencing that your beater seems to rub on one side of the loom when it is moved, your beater hinges - hinge hooks, are likely set to different height positions.     

To resolve, measure your hinge hooks from the floor to the center of the hook.   Make sure both left and right side are set to the same height.