Round off the ends of the E2-1X brackets per plans. Drill E1-1X brackets to 10mm holes and attach to engine and safety wire. Set and level engine and mark location of holes for AN4-10 bolts, drill and trim.Remove E1-1X brackets and prime. Assemble brackets and torque to 220 in/lbs. Set engine in place and secure with AN4 bolts torqued to 70 in/lbs.