Most common setup issue
Before Step 5: open and lock each side support.
If a support will not open, the white wing knob is usually too tight. If it opens but folds or wobbles, the knob was not tightened after opening.
- 1Loosen the white wing knob slightly, if needed.
- 2Lift the square support arm out and open it completely at the yellow hinge.
- 3Hold it open and hand-tighten the knob until snug.
- 4Check that the hinge stays fixed and the support does not fold or wobble.
Correct order: loosen slightly → open fully → hand-tighten.
Important: Keep fingers clear of the yellow hinge. Hand-tighten only—never use tools or force the support.