Nevermind. I did a mistake.

Ok. It seems there is a bug.
I receive different amount of hq from my quarry for the same amount of fuel.
It was 113 for 1k fuel but now I got 44 out of it for the same amount of fuel.
Put 500 fuel in there today too and received only 18 hqm.
The quarry is secured by turrets so noone would be able to steal anything.

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Tested this: 100 fuel now brought me 6 hqm.
This does not fit to the amount I received for like 2 days now (113 hqm for 1k fuel).

Set hq to 1 pm now. But all I got was 113 hq in half a day.
This should have been produced in 2 hours normally, right?

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In case I missed something here's my config: https://textuploader.com/t1epz