Is this the same plane I recall you having cg questions over in another thread? Could this have been a CG issue? Doubt the buzzing caused any interference, frequently means a slight bind in controls. A definite YES on the need for a range check, especially on a new plane. Didn't have time for ailerons? Was your other hand at lunch? If you got to 20 ft you had plenty of time to be fully on both sticks, if not upon takeoff. Practice this before next flight. Did you not say in another thread you had aileron and throttle on left stick? If so, how did you apply power w/o being ready for aileron? Not trying to pick on you, only trying to understand and help you not do this again.[] A clipped wing version of your plane will have a higher stall speed, how much higher depends on how much shorter. Less wing + less motor = more runway also.

Good luck,
Bruce