Lee, just de-molded my first Frekote mold, and all I can say is WOW!
It was 10 times easier to release the plug than Partall & PVA ever were. Not to mention, it only took 1 hour to go from polishing the plugs, to laying down the surface coat for the mold. If you haven't started with the wax, I suggest you get a quart of Frekote FMS mold sealer and a quart of 770-NC release. If you want to use the wax & PVA for part production after you pull the molds, you can use the Frekote mold stripper and then apply the wax & PVA.
Just thought you might want to know!