Talk:Akashi's Improvement Arsenal/@comment-26137249-20150630204036/@comment-26154973-20150702043001

+9 can differ from +8 by accuracy, but they should have the same FP. This post suggest +9 for T91 (for accuracy) and +8 for large guns (as well as this post, but see also 改修工廠における最大効率 section there and this post), getting the latter to +9 shouldn't be a priority.