Maxing the Deadlift (3 reps)

Warmup:
3x15 situps
3x15 back extensions
3x15 pullups
3x15 squats

WOD: "6x3 Deadlifts"
6 sets of 3 reps increasing weight each set to reach a 3-rep max

1. 287#
2. 307#
3. 318#
4. 337#
5. 357#
6. 367# PR - this beats my previous 1-rep max of 365#

This was supposed to be 5 sets but Dr. NoNo wanted me to keep going. I think my 1-rep max should be way up there next time I try it.