No I have not balanced it yet. I moved the engine up about 1/2 inch and I am going to put the battery above the engine. The battery is a 3000mah jr. I should be able to keep it right at 16 or 17 after it is balanced. I do not have retracts installed so this is saving a lot of weight I do not plan on putting them in yet I want to fly it first. I am taking it out to the field today to run the engine. Most people with a 16x8 prop are getting about 19lbs of thrust out of the super tigre 2300, and top flight states that it will fly it, and on the review the gentleman said that the OS was almost to much power. Yes, I would rather have to much than to little, but I do not think top flight would advertise the super tigre with it if it would not fly it, and I am on a really tight budget with this. So far I only have about $600 total in the plane.