You need to cut open the wings and reinforce the landing gear blocks. Other than that build it according to plans and fly the heck out of it. My Strega has a TT PRO 61 and tuned pipe on it and I am running well in Silver and that is all I did to mine. Now Gold is another story. The orange that PM uses on the Strega in only a match with the Oracote orange 877 that Horizon Hobbies has.