Quote Originally Posted by Taieo View Post
So once I do the quest for my BLM I can no longer lvl my Thum? If I still can lvl the Thum past lvl 30 is there a good reason to? if I am modifying my class with the BLM job... Sorry I just don't know but have been wondering for a while...
The BML is an upgraded version of a THM. When you unlock BLM, you get a job stone. If you equip it (while being a THM), you're a BLM, unequip it, you're back to THM. Technically, regardless of whether you're a BLM or THM, you are leveling the THM - the BLM automatically takes on whatever level the THM is and any experience earned applies to the THM (which basically means it applies to both).

Easy explanation:

If you're a lvl 30 BLM and you level to lvl 31, your THM is level 31 too. And vice versa.