Siphon mana on larger mobs

Ok, So when you put in mobs with a larger hitbox than normal, you need to scale the siphon mana circle up WITH the hit box size. It is almost impossible for melee characters to stand inside the circle with these larger mobs (specifically talking about the smiths in the Vaal temple). If you move them even a fraction of an inch as a melee character you are hit by the circle and lose half your mana. PLEASE scale the inner radius of the circle to match the hit box.