JAC gave me a hand to install the propeller extension to the engine propeller flange. We installed the mini-slipring, then connected the three signal wires and attached the extension to the engine flange. We numbered each of the six bolt holes to the correct sequence for progressively increasing the torque. All bolts torqued to 25Nm ( 18 ftlb ) and witness marked. It is definitely a two man job, JAC, thank you.