[many birds]

Hi all,
I'm in the process of putting in a full new quarter panel, outer wheel house and trunk drop off on my '75 T/A. I'm using a TIG welder. I ground off the black coating on the flanges used weld thru primer while installing the trunk drop off, and it made the welding a lot messier as it contaminated the weld and the tungsten. Can/should I skip the weld through primer and just rely on body caulking afterwards to prevent corrosion between the panels for the rest of the job? Not sure if it makes any difference, but the panels are all from AMD.