I bought a poke already built..It has ailerons and a Rossi 45 black on it.
Set you control surfaces where it looks like it will work...Then go back and devide by 1/2....(on low rate)
The rossi tuned pipe was bothersome because of the cheesy way it is attached to the enging (spring)
I placed the pipe where I wanted it and drilled a hole to set a screw....works good.
Good Luck
Doc