so i found this inconsistency:
in special modifications, you can use 4 advantage or 1 triumph while crafting to do this:
Create a schematic that permanently reduces the difficulty of creating weapons/droid chassis of this template by 1 (to a minimum of Simple (-)).
in keeping the peace, it says for armor crafting:
Create a schematic that permanently reduces the difficulty of checks to create armor of this
template by 1, to a minimum of Simple (-) (this can only be selected once).
emphasis on the phrase thats missing in sm, though i guess thats just an error and should be handled the same (or not?)
what bothers me is that we cant decide whether "this can only be selected once" means once per check, or once, just one schematic ever, one difficulty reduction for checks with this template. option 1 seems like a good balance, though option 2 is also plausible imo, even if its a bit harsh.