Installed the AeroLEDs nav/strobe mounts on left and right wingtips. Nutplates for the mounting plates laid out and installed with partially set solid rivets. The lights fit into the mounting plates better with 1/32" shimstock under the three screws attaching the mounting plate to the nutplates. Ran an 8-32 tap through the set screw holes on the lights. The thread for the green nav/strobe wasn't quite deep enough to solidly lock down the fixture.