Try a part without pva and just wax, you’ll see. 
Would it matter if I’m using a urethane primer to surface the molds after repairs? I’m thinking the polyester resin would eat the primer? Its a catalyzed primer if it matters.
I also use 3M77 adhesive spray to keep the carbon fiber in the corners from lifting while laying up the layers, would that stick to the waxed mold? Or is there a better way of keeping the fabric in the corners. I hate when the fabric bridges and you get a heavily colored corner from the resin.