Some questions more:

1) Is the rotor supposed to tilt back on DC when pulling the right stick back (equals to up elevator)? I had this opinion on my first autogyo and the helipilots had opposite opinion about it.
2) Metal or nylon geared servo for the "aileron" (.15 sized model)? Or does it make any difference?

I built the autogyros because I wanted to be different from average fliers. I have never seen others flying one as a model or as a full size. There seems to be rather small amount of modelers doing autogyros.