Bad spare part? Inspire 1 Part 31 Airframe Top Cover

Hello,

I damaged the airframe trying to paint with Plasti Dip, the plasti Dip is not recommended to apply in that surface because can damage the airframe. Now i bought a new spare part 31 airframe in local store, but i got a bad part because there is a cracked in plastic screw... i think i will exchange, this cracked can worse with time? Image attached.

I will never use it again, maybe i got bad plasti dip unit. But the question is I got replacement of upper cover and it come with little scratch, I think I will try exchange, because that cracked can worse don't appear to be normal and that part is expensive in my country...