Forge Lighting

Ive spent a few days trying to get the lighting in forge to stay lit, but if i move away fro the light it would disappear. this wouldn’t be a problem if it was a reasonable distance away, though it disappears 15-20 steps away. is there any way to get a light to stay lit? Im trying to make the power core from the halo 2 campaign level “The Oracle” but its simply not possible if the lights keep going dark. I would really appreciate some help I’ve looked everywhere for a solution.