Arrrggghhh!!! Lead!!

Did Ford use lead on the roof? While prepping the body (taking it down to bare metal) I noticed an awful lot of scratches from my sander on the metal, then I scratched at it with my fingernail and pulled up some metal. All 4 corners of the roof have been leaded. The sheet metal parts have been crimped, welded, then leaded. My guess is somebody had a screwed up roof and used one from a donor car.
 
I ran across the lead as well in my 67. Take care when prepping the car for paint with that on there. There is some needed prep/procedure (can't remember now...been 10 years since I did the body :shrug: ) After about 2 years, many small bubbles (pin head size) appeared in the paint right over the area that was leaded and nowhere else. :( even though it was covered with a primer sealer. Worth looking into. Anyone else had that issue???