Dressing Welds with All Metal and Epoxy Primer

No problem, I blasted the metal to metal and epoxy down to bare metal. Im going to touch up the welds where I can see some flaws. The butt joint (8 feet of it), looks pretty awesome. I never even had to use metal to metal in it. The 8 Feet of weld where I closed the upper stock body seam by welding in a rod is the problem area and that had some voids. The voids were where I did not get the spots overlapped enough. Just a matter of going back and finishing what I started. I filled the seam with a 16" rod and welded over it. I know I am going to have thicker metal in that seam so I may have "ghosting" thru the paint. I wanted to do this project in gloss black, which is the worst possible choice I could make. If at some point in time I can not live with the seam ghosting, I will have to cut the seam out and do a patch with two 8' butt welds opposed to one weld using filler rod and having a thicker metal in that area. Lot of good feedback in this post and I appreciate every bit of it.
 
As far as tools, Im pretty well equipped. I really want to follow Chads lead on TIG welding, but as I said, I have came a long ways on MIG welding and Im not ready to take on a whole new learing curve. The fact I have not mastered fusion welding with my Henrob suggests I may have the same problem with the TIG. I just cant get beyond the heat warping using the Henrob.
 
I would also like to try TIG. I started by learning O/A fusion welding, following Peter Tomassini videos. It worked fine when bench welding on a flat surface. But, when I went vertical on a quarter panel, all h@ll broke loose, and I had more waves than the Pacific.
 
Looks like I need a new tool! But I can still justify the flood lights when grinding under the dash.
 
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