In reply to Airlerons for loops.I think it had Longer Flaps and Slightly Bigger Elevator Control Surface.It had No Airlerons .Due to the Control Lines.Some Right Rudder for Tenson & Some Motor Angle change also for Tension on Lines.The Worst thing that can Happen Control Line is Naturally (Slack) When Doing Wing Overs You loose a lot of Inertia !It was a Carl Goldberg Nobler Biggest Build for Me at 15 yrs Old 1960s Before R/C Became the Norm.