XRAY - Model racing cars

I bought the new Lightweight 1st gear drive flange original from XRAY, and another one just for backup from another brand (still light weight).
do you know guys what I have found?

First I put the plastic gear to the non original one, and (obviously) I found that cannot fit perfectly, at the end is fitting cuz you tight the screw and ok........... its ok cuz you think that I paid this item the half price of the original one.

then I put the the plastic gear in the original one, and I saw that it fit perfectly, you know its a pleasure to se the gear going to the hole with jus tthe gravity force
then when I try to tight the screw I found that there aren't the screw.
so I had to find out from other stuff cuz even if the part it costs more the double price of the non original one, 50 cent of screw it will be too much!!!

so this is a costructive critic, cuz I love the car, I love all the stuff, I love buy the original parts.......
but the missing screw its a crazy things.
in Italy we say that you loose urself in a glass of water.... after u did the overtake of the sea.....

take care guys....