[EDIT] - FIXED
Hey there, the exploit is pretty simple.
3 Piece Tier 2 Hunter (Dragonslayer) gives +20% AP with aspect of the hawk. So what you do is...
1.) Put on Aspect of the Hawk
2.) Put on 3 pieces tier 2
3.) Put on normal gear (don't have to keep 3 pieces of T2 on)
4.) Enjoy +20% AP with normal cata gear on.