Take the plate and try it in the mount again. It should spin freely. Note which corner is the one that is at bottom left when in horizontal and bottom right when it vertical. Take two of the angle brackets and mount them on that corner using whatever screws and washers and nuts make ...
Spin inward and counter-clockwise Wave Cyclone Large storm that develops along cold or stationary fronts, with winds that spiral in toward a central region of low air pressure Anticyclone Storm that spirals outward from a high-pressure center ...