I use P3dv4.5HF2.
Just bought the Robin, and my first impressions are very good.
I noticed however that although the (real) Robin has no rudder trim, in the sim it does react to my rudder trim button (the hat switch of my TM Warthog). This I don't mind, but it seems to be reversely mapped in the P3D: trim to the right makes the Robin yaw to the left.
Can you please check, and if I am correct either reverse the trim operation or remove it?