Leave seams alone?

[Skip99]

I just finished all the bodywork and blocking. Car is now in epoxy . Ready to paint. But...there is a very faint ghosting of the seams in front fenders, rear quarters, and the rear panel. I understand this is normal factory look. It would really suck to have to grind out the seams and put mat and resin in now...but i would do it...however, i would like a few opinions? Leave it? Fix it?
it is a 72 350 4 speed car. Numbers matching, targa blue. Mostly original.

its only visible when the car is in direct sun and heated up...

 

[6880 Mike]

...I understand this is normal factory look...

Actually, visible seams were not the "normal" factory look. The seams were undetectable when the cars were new. With age, the bonding compound and filler used over the seam shrinks and they begin to become visible. I filled mine with one course of matte, sanded for contour, then primed. Grinding out the area is not required, but you need bare fiberglass prior to laying in the matte.