Thanks 5wests..........I've been trying to do some further research, but confusing myself with conflicting information. For instance I have read:
* You can brush, spray or roll epoxy primer
* Epoxy will "encapsulate rust" (you can prime right over it)
I know it would be preferable to spray over bare metal, but I don't have the facilities or capabilities (or $$$) to do it that way.
What am I going to lose if I brush on epoxy primer over light rust?