THANK YOU, just what I needed to know. Very good advice about starting out a little nose heavy. I am going to adjust balance at around 5 1/2 inch with weights on engine box held on with screws so I can quickly remove or add as needed. I am not a 3 D flyer yet, but I have seen several U tube videos of this plane, and it looks great in air. This is my first over 20 cc gas powered plane so I hope my skills are up to task. Again thank you for reply. Ken C.