Has anyone out there had a similar problem with their shell? I just had a new Leer installed on my Tacoma. After 1 day it shifted slightly and the back window wouldn't seat and lock. I just took it back to the dealer and their fix for the problem was to push in on one side and re clamp it. Well it works, except the shell's outside edge on one side is flush with the outside edge of the bed and the other side is 1/4" from the outside edge and tapers to the front of the bed. Their explanation is my 99 tacoma has weak side walls on the bed and they are not true and they flex some. Is this common with these shells or should I go back and raise some h$%^.