Tri-fold Hard Tonneau shifts sideways

[vonner25]

Does anyone have a fix or hack to prevent the tri fold tonneau covers from shifting and sliding out of centre when driving?

 

Mine is secured as tight as possible, but after a week or so it always slides 2" to the passenger side and looks  odd. 

 

Any suggestions are appreciated, 

 

Thanks

 

[Ravenkeeper]

Go tighter!!    But seriously, if it's shifting, it's not tight enough.

My (18yo) son helped me install mine, a week after I received it, and then re-installed it, last weekend (picked up 3 assembled bookcases a couple days prior).  We secured the front end, flush to the front wall of the box and centered on the rails, then unfold it and leave the clamps loose, then make sure that it is completely square to the bed, then tighten the snot out of the fronts, and adjust the rears so that I feel the handles lock in. 

 

The only problem, that I've had with mine, is we didn't have the rear locks adjusted tight enough, so they vibrated loose and the HIGH WINDS that day almost tore my cover off.  My wife had to help me batten down the hatches.