Guild Wars 2

Is it just me or is the chance to get T7 mats from 1 chest (Bottle of Airship Oil / Pile of Auric Dust /Ley Line Spark/Crystalline Ore) really low?
I opened arround 60 Airship Cargos and just got 11 Airship Oils! This is awfull… The drop rate is in my opinion too low.. Same for Noxious Pods.. it takes rediculously long! I can do one meta event per day, cause i dont have the time for it.. A bit of love for the working people who love this game Is there any chance to get T7 mats instead of opening chests? Or please increase the drop chance to 100%, cause you need 250each for the new Legendaries anyway. That means you have to open more than 1000 Chests! And this is a very large number! I really hope it will be changed..

PS: Sorry for my english

The story line gives you 30 airship oils.

Heart of Thorns storyline
5 received upon completion of Torn from the Sky.
15 received upon completion of The Jungle Provides.
10 received upon completion of Prisoners of the Dragon.

If you have alts you could run them through it to get 30 more for each.

Edit:
Ley line sparks: 15 from the story.
Heart of Thorns story
Completing Roots of Terror awards 5 Ley Line Sparks.
Completing Buried Insight awards 10 Ley Line Sparks.

Crystaline ore: 40 from the story
The story steps Bitter Harvest and Hearts and Minds from Heart of Thorns reward 25 and 15 Crystalline Ores
Some of the Heart of Thorns: Act 4 achievements reward 3 Crystalline Ores