Roof rail gutter finish?

I am stripping my roof getting it ready for primer.I looks like the rain gutter was filled with seam seal at the factory.What have you guys who have done a resto. in the past done with this area.Dig out all the seam sealer and fill it back in with filler?Mine has a few hairline cracks in it and looks better than some finished cars I have seen.Or should I spot putty the cracks and leave it alone.This area is one of my pet peeves.I have seen some really nice cars and this area looks like ****...

Thanks,Jim