Clarence Siman posted:From what you show, I would try to spread it by tapping a screwdriver down the seam, while it is standing on end.
I have installed Many, Many feet of this shelving. Clarence is right , a couple of taps with a screwdriver (Bladed) down the seem, while it's standing on end! Tap it on with a Small Brass Hammer, then Tap that shelving onto the next. I only used two Connectors, one in front and one on the rear. I used Stainless Steel Sheet Metal Screws to fasten the Units to the wall in "Stud " locations . They are hardly noticeable!!
NO PROBLEM!!
Good Luck!
PS... YOU HAVE TO BE A LITTLE PATIENT !!