Well I managed to delete the custom made objekts from a lot (not all) of the world updates.
Brought the size down under 20 gigs, and that made it possible to install the himalaya mesh and buy the jas39.
But it shouldnt be like this!
Now I have to delete the himalaya mesh again if I want to buy anything else.
And the game has started to crasch sometimes now.
And the maverick and reno dlc has stopped working.