Run one or 2 packs through them and they are fine. I personally have the MuchMore Tire Sander (I use it for cleaning tires) and I will spin them and put some SXT cleaner on a rag and get all of the mold release and junk off of them. Works well, softens the tires and they work pretty much first time on the track for me.
Used this for various Sweep tires (mostly QTS 32) and Jaco Blues. Same technique can revive an old set of tires for me as well.
Desoto Racing * Serpent America * Boca Bearings
"I was doing fine until about mid-corner when I ran out of talent."