All right, two coats of color on the core and it looks good. This is has been more trouble than it should have been. At some point someone sprayed the top of the core, radiator shroud, air intake ducting, etc, with high gloss clear. It was hard to sand off, and I am still working on getting the radiator shroud cleaned up. It's probably what caused the primer problem on the core. You can kind of see the original and correct gloss in the before picture under the area where the shroud overlaps the core and under the two spots where the front support brackets have been removed. I'm going to let these two coats harden and then wet sand before doing the final coat. I used OER low gloss black and while I love this paint because it has high solids and a very low tendency to run, it takes a long time to harden.