Actually, it flies pretty well at that setting, but I do believe the headspeed is on the low side. Before I try any x-treme manuevers, I'll finish breaking it in, and gradually lean it out. I've noticed from other post, that alot of guys have had problems with carb adjustments, on their TT50 & TT39s. I do have a problem with leaning out at mid throttle, and I noticed quite a few guys did the low-end needle modification. I'm seriously thinking about giving the mod a try.
Mike