Trimmed the top of the left wingtip for hinge. Installed the wider half of hinge on the wing with the trimmed piece as a spacer. Installed the left wingtip to the wing leaving the bottom untrimmed to utilize #6 screws. Clecoed wingtip in place using the top hinge and bottom edge of wingtip. Trailing edge of wingtip is rock solid with this type of configuration versus using hinges on top and bottom.