Match drilled flap hinge mount brackets. Drilled hole for tubing to go through brackets and used dremmel to enlarge so tube sits at correct angle. Reamed mount tubes to 5/8". Welded the 0.062 mounts. Cleaned slag with 5/8 bit. Bearing slides in snugly. Sure seems like I did more. These were actually fun to make. Felt like I accomplished something.