Hi just purchased a saito 56 I am a little confused when looking at engine requirements on many of the models out there. Some say 40/46 2c 70/91 4c did the 56 fall through the cracks what is a good rule of thum for my 56 can I use it in a 46 2c application and have enough power I dont fly fast iI just want to feel like I'm not under powering any help appreciated Bob A