HI. I RECENTLY HAD A FEW NASTY CRASHES WITH MY Q500 4K AND ENDED UP HAVING TO COMPLETELY TEAR IT DOWN . THE PLASTIC SHELL WAS OBLITERATED LEAVING ME NOTHING BUT THE GUTS. SO I ABSOLUTELY DONT WANT TO BUY ANOTHER CHEAP PLASTIC SHELL BECAUSE IN MY OPINION, IT SERVED LITTLE PURPOSE IN THE WAY OF PROTECTION. IT SEEMED VERY BRITTLE SO IM LOOKING INTO AN ACTUAL CARBON FIBER FRAME BUT NOT THE ONES THAT ARE ADVERTISED AS MADE FOR Q500. LIKE THE RAKON HELI CNC FRAME BECAUSE THEY ARE TOO EXPENSIVE. SO MY QUESTION IS WHAT SIZE FRAME DO I LOOK FOR THAT CLOSELY MATCHES THE OVERALL DIMENSIONS OF THE ORIGINAL. OF COURSE THE PROPS ARE 13" ACROSS AND FROM MOTOR TO MOTOR IT MEASURES ABOUT 420mm. I ASSUME WEIGHT IS ALSO A FACTOR SO CANT WEIGH MUCH MORE THAN THE STOCK WEIGHT WHICH IS 1,700 GRAMS (w/battery and camera). Thnx