This has been explained before. It's hardcoded to work the way it does in the engine. So it's not as easy as altering a script. Like Mike said, they have indicated some Fix Boy improvements being planned for the future.
This is no excuse. Tla has it to where you click on the object you want to craft, then you enter how many you want to craft all in the same fixboy menu. I believe they are running on the same engine also.
TLA is that way >>>>