From Crucible site it looks like you did not soak long enough. Here is the data below,
Hardening
Preheat: 1100/1250F, equalize, 1400/1450F, equalize.
High Heat: 1900/2000F, hold 30/60 minutes at temperature.
Quench: Air, positive pressure vacuum, interrupted oil. Cool to 150F.
Temper...