Main wing construction

The main wing weak part is connection portion in Pegasus, according to my experience in the former model Pegasus ST, 100 flight invited some irreversible backlashes at the connection between aluminum pipe and holding holes because of the vibration of motor combustion including the stress while maneuvering, both phenomenon occurred, enlarging holes and thinness of Aluminum pipe.
The holding holes should be fitted tight with keeping some smoothness for insertion and disassembling, so to speak contradictory conditions must be satisfied.
I just imagined to apply Microflon, micro grain Fluororesin powder, in the wooden holes intending reduction of  sliding friction.
2 mm nutters would be invested in flying tail Horn portion to make them tightened firmly.
These kind of trifle attentiveness and ingenuity are indispensable for the better maneuver flight.
As Dr. Peter K. Thomas in UCLA said, "A trifle thing might be trifle, on the other hand, piled trifle things are not trifle but worthy enough!".