Hi, i have problems getting the tools to the airport supply buildings. There are only transported a few (5 to 10) items at the same time.

Possible bug? For this mission in my first playthrough, I decided to take my time making money. I finished the first main task (second level production at London) by Feb 1920. Only then did the first bonus task (finish by Jan 1920) pop-up. https://psteamcommunity.yuanyoumao.com/id/droobloo/screenshot/2019353376802238050/

I finally did it. It took me many hours for the last mission (15 letters in 4 cities). My last aproach, which partially worked was to set up city by city and have the transporters stop with the letters. Then, after the last city was set up, i let them all go and deliver. It needs way more than just 15 ( have at least 5-6 trucks with each 7 letters ready). I finished the mission in 1938 :D

Feedback @Mats: Thank you for this AWESOME campaign. So much harder and better than the original one! The last mission had scripting issues. When I had more than 5 planes in the air, the game would lag really bad.