One Tactic I Use to Level some of my Lower Level Mogas Faster is I Equip My Highest Level Moga (Currently My Level 43 Valgore) along with a Double exp. Potion and Dexter Summon and Bring 1-2 Mogas along with your Highest Moga that you want to Level then go to the Highest Node in the Citadel, Where you fight I like 4 Level 43 Mogas and Send out the Moga you want to Level First, Let him Get attacked then either Coffee 'em and Switch 'em out if he dies, or Switch 'em out after they Take the first attack with your Highest level Moga and Kill all the Opposting Mogas...
after that, you're Usually left with Receiving about 4000 Exp between the two Mogas....^^
Surry if Any of you Got Confused Along the way of that Explanation...@_@