Currently if you would change ur "use item/place block" it doesn't carry it to the crafting grid where when you right click and drag it gets 1 item out.

Some ideas you can fix this is just to change it so "use item/place block" when changed will carry on to the crafting grid and that key would be the one using to drag and get 1 item out or create a whole new section for the crafting controls or sth.