Got my Evolution LED lights the other day and decided to hang them from this overhang that juts out from the ceiling. I bought steel cable and made looped ends to hang. However, after making them and measuring out the spots to put in the toggle bolt, I drill and find out that the overhang is actually a vent. There's metal under the drywall and since I'm renting I'd rather not puncture the vent. Any ideas on how to hang my lights now?