RE: Four Star 40 with a TT36 Pro question.
Happy landings on the maiden Rappy .
My4 Star has had many engines ST .40 ,Magnum fs .52, saito .56 Saito .72, GMS .47 and a OS 46 ax. All pulled the plane really well You should be fine flying it with the 36 but it not going to do the plane any justice . If on a budget ,save for the ST 40 it flew mine nicely.
My favorite combo is the Saito .56 with a 12x7 APC.