Mark;

I've used Testor's primer for all my metal pieces on my Tamiya tanks and aftermarket metal pieces, and it works very well, but cleaning ALL parts are a must before priming as well as the final color coat. That Krylon paint is pretty tricky to paint with. I've had better results with Tamiya and Model Master paints if you're using rattle can paint.

Tamiya also makes a primer especially for metal, so that is another option as well.

Hope this helps.


Jeff