Hello,
Do you mean you spent all 150 slots with crafting templates and you have no space to insert new ones to increase items/second speed?
I was thinking about this problem already and I have kind of solution in my mind. Next update I'm going to introduce some sort of "Crafting Expansion Module". It will stack up and give each template inside the chest x2 crafts per second.
Also I'm going to introduce a number of mod settings so you could configure how many slots you want to have inside Material Chest and Material Interface (but be aware that more slots mean more calculation each second that might impact UPS if set to big numbers)
Thanks,
Engineer