Can turn the normal cast bar back on under player options in Xperl to see if your steadies are actually happening.

The number of shots fired should be fairly close to 1 auto to 1 of everything else be it steady/arcane/sting. Check the count of shot and if your arcane/steady/stings totalled is lower than your auto then you missing some shots.

Make sure to use Aspect of the dragonhawk not AoH also.

Will go attack a dummy later on my hunter and test the macro and see what impact it has on my dps.

Ok

Manual Weave

3200 dps 41% auto 39% steady 11% arcane 8% viper 35% pet

Your click macro.

2700 dps 50% auto 22% steady 17% arcane 11% SS 41%pet

Your macro without the commas after steady shot.

3000 dps 38 auto 34 Steady 18 Arcane 9 SS 9 pet 38 pet.

Suggest you take out the comma's after the steady shot as its delaying the firing of steady shot or change it to simply /cast Steady Shot.

Anyways hope it helps.