Way to go, Mike! yup, I'd say a profile is next. Much cheaper to keep in the air and fix after something goes wrong when you're pushing the envelope. The tip stalling thing will totally disappear, especially if you get a Mojo or a Katana 70 V2. Best of luck as you begin working on torque rolling, rolling harriers and inverted harriers. You're a sick puppy, mike! You're one of us.