If you loosen the through bolt that holds the springs, and the two mounting bolts up top, you can shim between the body and the hinge to lower the deck lid. Adding shims between the hinge and the lid itself will raise it. Often when new weatherstrip is installed, it is done incorrectly. It should NOT be glued against the inner rib the the deck lid all the way around. on the sides, and top it should be 1/4" away, only on the bottom is it glued tight to the edge. Also most replacement rubber is too stiff. Mustang fastback wetherseal is much more pliable, and has the same cross section.