Painting the fiberglass?! help needed
 

Hi guys, I just bought my Mugen hardtop used not long ago, it came with silver, and I sent it to the bodyshop to have it repainted into black. So I just got it back couple days ago, and I noticed some uneven area on the hardtop, it seem as though it have been pressed against by something and left some little ditches, they are not so noticeable and not really that deep, but you can clearly seem them from certain angles, so I took the hardtop back to the body shop, and they told me that all fiberglass parts tend to do that, they could fix it for me, but those ditches may or may not pop up again, are they telling the truth?

Thanks in advance.

my guess is, they didn't sand everything down smooth nor bother filling in the ditches before painting it. i bet the silver paint is still underneath

Guerenteed the silver paint is underneath. To strip a fiberglass part would not benefit the end result. If anything... the finished product would be better if the previous finish is not stripped thus the porous fiberglass remains sealed. Most likely there is some warpage to the surface of the part from the original mould that was previously not noticable (silver hides a lot!) Now that the part is black - the previous casting shows some flaws. It is easily repairable using a guide coat and some body filler / fiberglass putty. The roof will need to be repainted however.