Helix duration does not scale properly for /SCH

[Theytak]

Yes, but it was also as /sch. Only SCH gets the duration bonus with Dark Arts up. Unless I'm missing something?

ISP: Optimum Online
Type of Internet Connection: Cable
Internet Connection Speed: 15Mbps
Date & Time: Oct. 28, 2011
Frequency: Every time (tried x 4)
Character Name: Foldypaws
Race: Mithra
Main Job: RDM95
Support Job: SCH
Area and Coordinates:
Party or Solo: Solo
NPC Name: None
Monster Name: Beach Bunny, Sand Lizard
Steps:

1) Set /SCH 47 as subjob
2) Cast helix on the mob.
3) Helix spells will last only 30s, despite helixes gaining a duration boost to 60s at SCH 40.
4) I repeated the test 4 times with different mobs.
5)I confirmed that as SCH47, helix duration was 60s without Dark Arts.

Is what you're missing, I think.