Bobby, Nothing special. But,.... I am careful with the blade just before and during the quench. I hardly do any grinding of bevels before the quench on a thin blade like this. I may 45 the edges to find the center margin. Thermo cycle. I also don't expose the blade to wind while hot and heat it evenly. Bring it out and slice the air and slice the oil. Don't fan it side ways to get to the quench. Don't paddle the oil with the blade. It will sometimes still warp just because but I draw it back before any straightening attempts.
Think about the dynamics of the quenching process and the heating of the blade and remember that evenness is so important. Even heating, even heat extraction.