I have the impression that the express stacking beltbox is located too far in the tech tree, as it requires production science packs. Although I have recently unlocked express transport belts, I cannot utilize them effectively because the beltbox is currently unavailable to me. It will take another 30 hours until I get the necessary production science packs, which, in turn, require vulcanite.

I propose relocating this research requirement to the space science tier. If the author is unwilling to make this adjustment, I would appreciate any guidance on how I can modify it for my own game.

I checked the code and realized that the production pack should be removed from the deadlock-stacking-3 technology. However, in my game it is still required.

Should be fixed soon.