Volfy...the balance (c/g) they state in the instructions is way off. If memory serves it was at about 50%. I always balanve my planes @ 30-33%. It will and does fly at 50%....better check the c/g on yours. It is a real forgiving c/g type plane so I did the math and got the c/g where it should be. Now...I may be dead ass wrong at 33% but I have been doing this some 30 yrs. so I know how to get the c/g right on a plane. The reason I know it will fly at the c/g they state is because of the guy that owns the only other SS 60 is Blackie(Randy) from the post above these post and he and I have flown his .