The tail rotor drive shaft couplings were installed as per the instrucitonal videos using a "D" size drill for final assembly. The tail rotor shaft bearings were installed and the individual tail rotor shaft dimensions were measured and cut to length. The aluminum tubing cut well on a carbide tooth table saw. The sections were all installed and everything was measured and remeasured to ensure proper tolerances. Next will be clamping of tail rotor sections and then drilling.