couple of other points....on my kmp beaver....controll horns (plastic 2 screw pinch tupe)totally eliminated.....used carbon fiber horns used on jets...these are hysoled into slots drilled into wing/flap/ele hard points...good for200 mph plus...no ugly backing plates....earnst h20 rudders/proctor pullys work fine....if they bind its due to lower button head screw...too tight....or molding distorted...get new ones...engine....evoulation 26/35 seems to fit cowl best....35 for higher alt lakes.../ft windshield...dont use supplied screws...use any good white/canopy glue...much cleaner install and h20 proof when cured....side windows go in good w/omni/goop into small syringe for tiny non/sloppy bead/1.5-3 float inc to wing inc fine...step position not that critical....1in either side of c/g/servos...digital/mg/65-80 oz fine...im using hitec mgs...very little gearbacklash....good value/im using twin lipos w/regulators....light and c/g good with heavier evo 35/19/10 carbon fiber prop......sinc kp couch