Attached wingtips to wing with silver clecos. Removed and inserted aluminum strips into wingtips held in place with aligator side clamps. Match drilled the strip to the holes in the wing tips. Drilled 5 3/32 holes in each side to insert small flush rivets to hold metal strip in place while mounting wing tips. Reattached to the wingtips and updrilled to 1/8. Riveted wingtips in place with CCP-44 rivets.