Episode 8 is out
One thing i noticed is that you need to be super careful about your supplies to the assemblers.
They will pick a recipe at random and see if they can make it. if so, they do it regardsless of other materials present. At least that is what it looks like to me.
One thing i found is that you can stop an assembler with a redstone signal on the controller. This will not reset the recipe selection but at least you can stop the waste.
One way around this is the use of blueprints.
Apparently you can insert a blueprint in the controller to tell it what kind of machine it is.
Not sure how difficult it will be to use but probably worth checking out for fools like me who can't balance the inputs perfectly.
Like the new furnace. Good idea to have an intermediate step from the blast furnace to big smelter whose name i have forgotten.