Thats what i do, But for Underworld. Im using x3 Att and x5 Def. With my War lv99/HiAndro lv99. Rave lv90/Sakuya lv90 and MetalGrey (Blue) lv90. Currently im on 29 Floor. When my Digi all lv99, I will go for Stage 50. So my friends didn't suspect anythings.
Im lvl28 With 6 Mega lvl99, How i survive from getting banned? I never use Mod on Battle Park/Underworld. So my friend didn't suspect anything from me. Dont grind to much when ur still in low lvl. cuz thats make no sense, Play it safe. Play it smart.
Im using x10 Att x10 Def on Storymode, And at Clash when i found lv5 or higher. Im using x20 Att x20 Def. All good, But im still afraid using Mod at Underwolrd..