[header] How to adjust a lazy susan [title] Pinpoint where rotation problems are occurring. [step] When a lazy susan becomes stiff and difficult to rotate, the problem is usually caused by either the center shaft or the position of its bottom shelf. Lightly spin the susan and note where it locks up, has difficulty turning, or has poor clearance. 
[substeps] If the center movable shelf begins to bind, it will prevent free rotation. In this situation, you'll need to loosen this shelf.