Leadfinger, I'm using the Tamiya acrylics in the jars, not the rattle cans.

The Duplicolor Primer appears to be Lacquer based. I let everything dry at least 24 hours before going over with a different product.
I did not have a bad reaction with the Tamiya paint, just a bad surface. Not fisheyes or crazing, just bad orange-peel. Needed to be thinner. It looks like it will flat out just fine with some 2000 grit given a few days to dry.
The Testors I'm using are the Model Master Acrylics. I went to a different hobby shop, that's why I got the Tamiya. Not saying Tamiya is bad, I'm jut more used to the Testors.