Hi!
I think I found a way to fix the outtriggers. They now run nicely sychronized with perfect ground clearance.
I also put in a cargo area and a parking position for the (slightly modified) crane.
https://youtu.be/tMQPsqJXibE
Edit:
Here are 2 renders and the lxf file: https://drive.google.com/drive/folders/137C9oBwjCSwnm5Fiv_O1EgI3HkrUjcUV