Toyota Hiace van
Site Reviews: 19
Gallery Images: 3
I suppose the problem being, it wouldn't take very much, in the way of a bend or twist, or a tired strut or maybe slightly more "drag" on one component, over another, in order to cause a misalignment...even the incorrect folding,"bunching" of fabric could cause issues?...maybe..?
If everything is straight and true, it'd be worth just spraying each and every pivot/joint/hinge with something like silicon spray...just to see what happens.
(...Is it the pop-straight-up type? or one that's hinged from the side/front/back...?)