When a load sits on a Centipede® Sawhorse or Support XL for a period of time, the steel struts may become stuck in the lower guide tube. When this happens, the unit will not fold up as easily as it should.
To break the struts free, simply put your toe on a foot of the unit and pull up on that P-Top. Do this for each tube around the outside of the unit. After this has been completed, the unit should once again fold and unfold as easily as it did the first time.