Talk:Akashi's Improvement Arsenal/@comment-25459687-20141101232323/@comment-25477086-20141101233533

And to add onto that, the scroll bar allows you to guarantee the upgrade succeeds, at the cost of additional development material and screws. So if you see a 3/8 that means it will cost 3 for a normal attempt, and 8 at the guaranteed rate. A fail means that you lose the materials, but not the base item or stars.