I have recently bought a Fei Bao Rafale, actually, i bought 2 RTF planes, one Sport scheme and the other Camo. I have started assembling the Sport version and came across a few issues:
6 out of the 14 hinges broke in pieces when i tried to gently open gear doors. it seems that they had been installed and received a coat of paint and became brittle.
Second issue i came accross, is related to retracts units, main retracts do not seem to be very strong and there is a lot of play while they are in open position (they move back and forth and are not rigid), furthermore, when i tried to operate system, i was not able to retract the gears and i was hearing a whisling sound. At first, i thought that i had a leak in the pipe ssystem, but soon discovered that problem came from one of the main legs which was leaking air, although unit would open and lock if air is blown through front nipple, it was not retracting when air was blown through side nipple (the other main and nose retract were retracting ok).
I have dismantled defective unit but did not try to open main cylinder, view i did not know if same could be opened and i didn't want to force things up.

Can anyone advise, if they have experienced such isses or ultimately, can provide some help on how to solve this problem?
Thanks. Dany