do those spacers go on top or bottom?
On top of bed.....I'm assuming bolt heads on top of rails need a spacer if they are atop a depression and no spacer if they are on a hill, correct?
Under bed..... if that same bolt on top of a depression (top of bed) will be a hill under bed and not need a spacer. If bolt on top is atop a hill, the under bed it will be in a depression and a spacer would be needed, correct?
What do you do if the hole ends up between a hill and depression on top or underneath? If you move rail to one side to avoid this, rails are no longer centered between bed wheel wells.
