I have started a new game (my first game with ECS after a 2 years break) with the latest versions of the ECS-vectors Basic, Town, Food, Chemical. Thanks to George and others to make this set available. The concept is great ... and the combination with Zimlock' graphics is a cool idea.

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After the first 5 years I'm really wondering how to play these vectors, esp. to get some ideas how these productions are being calculated, and I would appreciate to get some help in this respect.
I started servicing 2 oil rigs and a coal mine. Slowly but steadily I could pack back my starting loan. But after 5 years I just have 150 k pounds profit on my bank account and I don't see the possibility to create a proper income stream. Regarding the serviced industries I have:
- 1 oil rig, seviced with 1 ship. It is producing 200.000 l/month.
- another oil rig, serviced with 3 ships. It increased its production and produced for a short while 720.000 l/m, but now it felt back to only 90.000 l/m (!).
- the coal mine is serviced by 1 train and has only a production rate of 48 t/m (!) after 5 years.
I thought that the amount of produced raw material depends on the service being offered. Despite the fact that I'm servicing 1 rig with 3 ships, the amount of produced oil is lower than for the rig serviced with only 1 ship.
The other issue I don't understand, is the coal production. The train sits for half a year (!) at the station (83% of the production is being transported, the station rating is at 80%) to complete one full load, but even if it is loading coal (!!) or returns from the power plant, the production rate is going down.
I have raised similar questions in the German TT-Forum, but I received the answer that more or less nobody so far is able to play these vectors profitably.
My question(s) now:
I would like to know if others are facing identical or similar problems. If so, how is it possible to bypass these problems ?
I like the idea behind the ECS set and would like to play with it.
Greetz