"After several layers of thick primer I'm still left with pits and other visible imperfections. My hope though is that I can manage to overcome some of these bits by either sanding back or welding in more material (and grinding again). The layers of original primer and paint are pretty thick. I'm not sure I'm going to be able to replicate it, but hopefully I'll be able to blend it enough that no one will notice."- quote


Don't car restoration experts use bondo for such final blending steps?

Nice work!!

__________________
1979 300D 220 K miles
1995 C280 109 K miles
1992 Cadillac Eldorado Touring Coupe 57K miles SOLD
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1979 240D 140Kmiles (bought for parents) *SOLD.
SAN FRANCISCO/(*San Diego)
1989 300SE 148 K miles *SOLD