BigDodge,I can't really help ya on this build. But,I always add a little clear to my paint right from the get go and get a real shinny shine. Also and I've also found out if I add just a little extra thinner to the paint it seems to be skinnier. You,know come to think of it-how humid was it when you painted the car? That will kill a shine. Are you wet or dry sanding-I'm thinking your wet sanding-right. And myself I don't do the polishing compounds except in tight spots. Good Luck and hope ya figure out was the problem was and pass on any info if you do.