Use resolene or mop n glo, either one cut by 50% water. Or that's what I use on all my things, painted, dyed, stained, antiqued..... If you are going to antique, put the finish on first, then after it's dry the antique. Since the antique is thick I make sure it's really dry and then put a second coat of finish. It's best to do these finishes in light coats and repeat....but they don't take a long time to dry.
I have no experience with wax so don't know which thing caused you stains to run. Maybe they weren't dry enough or maybe the wax, I really don't know. I don't use wax. Cheryl