Shorten your lines to 42 foot and see the difference. Maybe even try 35. Here in Tuscon at the VSC, was in the 70's and mild breezes. Watched a young man flying an ARF Smoothie who I beleive they said was 12 years old flying the AMA pattern like a pro. I think they said his first name was Mike. He is also a very courteous young man and will go far. I did check his head size and told him if it started getting too big we will take him down a notch.