so this occured to me,well when i was wearing 3/5 HA and 2/5 LA, i have around 12 atk level and 50 def level ( buffed),after trying to wear 4/5 HA and 1/5 LA,my atk lvl stays the same,in the screen it stated + 12 atk level,so i was expecting a 24 atk lvl,:/ so is there a change in the bonus that makes this or do we need to wear a full set in order to get the bonus 4 and 5?