Leveled helicopter, then checked fly wheel housing, then main rotor mast. All were 90 degrees to horizon using a Smart Tool. Leveled transmission and drilled 15/64" holes through brace and transmission. Then reamed hole out to 1/4". Removed transmission to elongate rear hole so bolt would fit. This bolt must be inserted from the bottom up because of clearance. Reinstalled Transmission (third time!) and attached all braces. NOTE: Braces must be in place and aligned prior to lowering trans in place because it's not possible to wedge them in afterwards.
