As a fellow student pilot I’m not worried about the wings falling off, but am a little concerned about the flimsy seat position lock on Cessna 172’s. After reading about (I haven’t checked our rental yet, but next time I will look at it for sure) description that it is just one pin, not two, or three, and that it was designed when pilots, most people weighed more Ike 60-70 kg, (I’m 110), and pilots experiencing it suddenly giving way, with the inevitable reaction reaction that they pull back on the stick, can’t easily reach the rudder...has happened on takeoff.