I have mine set a little nose heavy and it flies great. I replaced the prop with a 14x8 and picked up about 8 miles more which put it at 136. I fly at the Anderson Aero Modelers in In. so if anyone close needs a radar check let me know and I will have my brother take care of you. I have found that it flies better nose heavy at the speeds I fly but if you fly slow it takes a lot of up elevator. But who flies a mustang slow