Skilled skillmill Workout

For time:
40 DU
15 T2B
70m Skillmill sled push with 6
40 DU
15 T2B
60m Skillmill sled push with 7
40 DU
15 T2B
50m Skillmill sled push with 8
40 DU
15 T2B
40m Skillmill sled push with 9
40 DU
15 T2B
30m Skillmill sled push with 10