I bought a carbon roof, overall condition is okay, just some minor set back that is not noticeable in a few feet.  Up close you can see 1 large crack on the side, and small ones all the around the roof.  My problem is the long crack, it seems like it has gone through all the way down to the carbon itself.  Is there a way to fill the crack?  Do you just sand it and hope the clear coat can get through or do I need resin?  How do you spray the clear?  Do you sand first, then buff, then respray the clear?  Here are some pics

LONG CRACK







Here's a sample of the crack that goes around the roof.  Seems like these are sandable then buffable





Here's a big crack but I believe weather trim will cover this part but might as well fix it.

Very resin rich part ! Photo 1+5also show why you should roll carbon !

Seems to be 1 cosmetic ply of carbon ? looks like its caused by fitting and bolting down the flange and cracking the resin

Grind out crack,fill and rub down and lacquer

extra ply/plies on the underside or when you fit adjust fit so flange area is correct

Myself I would liquid shim it onto glue then bolt up once glue is set