Ok so you poco242 make a prop hub thats similar to the Zenoah g38.Thats cool and everything but,my question was will the Zenoah hub work just the same.It uses a round rotor nut that it centers on just like yours does.I believe the diameter of this is about the same as the shank on the poulan nut.If not this is a easy fix either further machining or (drilling).or a sleeve for the shank.Either way,I believe the holes line up perfectly to the predrilled in the poulan fly.I guess the bottom line is how much is your fly going for?The Zenoah is only $19.00.