Note that MM1 and 2 monsters have improper damage values, and you'll need to recalculate them. Make those 8 + level in damage on average. (A 3rd-level monster might do 2d6+4 damage, average 11, standard for a 3rd-level monster.) +25% for brute attacks, -25% for AoE attacks, artillery melee attacks, and effects that inflict strong control effects, and +25-+50% for encounter/recharge/daily powers. (Apply all mods. A brute that has an encounter power that does AoE damage would do +50% [encounter] +25% [brute] -25% [AoE].)