Hello guys, Im about to install an OS .91 FX in my Extra 330L, 1.65 span; 1.55 fuse, 3,4kg weight. Just wanna know if I need to put some degrees of incidence to the engine, in order to get a maximum performance in 3D manouvres, for example.

Thanks you so much for your answers, and have a nice day!
Andrés