Note: This article only applies to tables shipped out before 2019. Any tables shipped out in 2019 or later will not encounter this issue.
Occasionally during shipping or transport, the mounting blocks (red rubber erase-like blocks) on the mechanism may become misaligned. This may cause a screeching sound and/or mechanical obstruction in severe cases. Fortunately the issue can be easily resolved without tools.
To check if your table has this issue take a look under the table and identify the 4 red rubber blocks. They should be horizontal or tilted slightly down towards the center as shown in the last two images below. Alternatively they may appear like the first image. To fix this, simply grasp the mechanism plate where the orange block is attached and swivel it till it matches either the second or third image. Repeat this for all 4 mounting blocks.