[ solved ] weird shadow problems on bonnet, boot, and doors

[mazhic]

i made a mod to gta sa that replaces tampa, it worked very well but there is some bugs on it, like weird shadows on the bonnet, boot, and doors ( like some parts being more dark than the original color and the door having some weird light/shadow problems )
and the rear glass of it don't show the interior of the car
here is some pics of it 
the boot door and bonnet of the car have the same color than chassis but for some reason the color of it is darker than the chassis, and the door have this shadow problem
https://drive.google.com/file/d/1X0azLle-sKZjlPWi2EQ_Rf7QrCvIiJ1T/view?usp=sharing


https://drive.google.com/file/d/1OLmQq4DZ52jShWHuiY790SuPBwNltbXa/view?usp=sharing
the interior of it is missing from this angle, i checked the other parts and its fine when i change the angle
if anyone know how to fix this bug please tell me

sorry if i posted in the wrong forum

Edited February 7 by mazhic
the problem has been solved a long time ago.