For instance, substations and conveyor belts still can only fit one stack into the rocket, regardless of what the multiplier is set to. Other items, like Crushers and Space Platform Foundations, work properly. None of the other mods I'm using affect conveyor belts or substations, so it's not a mod conflict.

For instance, substations and conveyor belts still can only fit one stack into the rocket, regardless of what the multiplier is set to. Other items, like Crushers and Space Platform Foundations, work properly. None of the other mods I'm using affect conveyor belts or substations, so it's not a mod conflict.

If items do not have "weight" parameter defined in game files, rocket defaults to 1 stack per rocket regardless of capacity increse. It's how a base game engine works.

But Stack Inserters work properly with the mod, while Fast Inserters do not. It seems completely arbitrary. Electric furnaces are affected by the mod, Steel Furnaces aren't, etc

Wait im not messing with any item weight at all, just the tonage of the rocket :) so..... Factorio spagetti code?