I match drilled thru the p3 hinge inside to fiberglass tip. Removed and deburred. Then I drilled in between each of the #40 holes on upper and lower p3 hinges—used a #27 drill. I plan to wet rivet the p3 hinge into the fiberglass tip so that the hinge is bonded both by rivets and by some structural adhesive. The additional holes will allow for some of the goop to get a better hold on the hinge.