the mother of all mistakes...
... I'm really surprised you found that many problems...
To be honest i was a bit surprised too because i heard mostly good things about Durafly and their Warbirds. A few buddies at the field fly some of their planes (Corsairs and Thunderbolts) and they never had problems like this, or at least not combined in one model.
As is said i guess i got a monday morning modell, the poor chinese guy who put it togetether must have forgoten his tea or his bowl of rice this morning, or maybe is wife was mean to him, i dont know :/.
One of the worst things for me were that the elevator and tailwheel servos had no screws in them, so the servoarms could have come off at any second...i was glad that they were also not properly adjusted so i took a look into that little accesshatch in the back. Those missing screws could have resulted in a very - very short maiden flight.
Also almost all the hinges of the landinggear doors were, or came, loose after one or two test runs...the left or right, i dont remember which one exactly, engine cover were loose too...u know they should be glued to the engine nacelle...i have them taped on right now because i have to remove them anyway...you know for painting and stuff.
Oh and one other thing i didnt like much...the foam hinges on the elevator and the rudder. I moved both only once or twice to maximun deflection to loosen them up a little...and i could see clear signs of cracks in them and i dont mean a wrinkle or so...so i secured/reinforce them with hingetape on both sides...that should hold for now. Maybe i will cut them out later and replace them with nylon hinges or something like that i dont know yet, usually hingetape works fine and this is not a highspeed plane. The hinges on the ailerons on the other hand were fine...did the same thing, and no signs of cracks or anything, as it should be.
And then there were a lot of little, but very annoying things...like excess glue inside the hole for the wingspare...so i couldnt even get it in, and ....the screw thread of the forward wingjoiner nut was defect, you couldnt screw the bolt in, i had to rethread it.
Then the ESC`s were not properly setup, dont ask me how that could happen but i heard different beeps from the ESC´s when i first activated the plane (by the way there is no ESC programming manual included), i had to contact the HK LiveChat support to find out which ESC manual should work, because on my ESC there are not stickers or anything to indicate what kind/brand/type of ESC it is. And there is no mentioning in the manual that you have to teach in the throttle positions or otherwise the motor start a different times or run with different revolution either, also not a good thing.
And finaly the fuselage or the wings, i dont know, i mean i like a tight snug fit but this was a bit too tight...i had to squeeze the fuselage onto the wing, so hard that i was afraid i would damage or at least dent the foam, i was seriously thinging about getting a sandingblock or my hobbyknife (not jokin).
She is ready now (as far as i can tell) and looks nice (still a very cool, very good looking plane if you ask me), i really have to give her her that, but to be honest if a newbee had baught that plane he would have been really annoyed, annoyed enough to throw the damn thing in the corner and never touch it again.
Puh, that kind of turned into a novel