My wife and I are trying to hang a somewhat heavy picture frame from our wedding. We had it on command hooks and it was working great. But once a couple other pictures in the house fell and broke from the humidity, we decided we better put this one up with nails and hangers. Where we want it, we can't find a stud and I'm too cheap to buy a new stud finder right now. Does anyone know offhand how much weight drywall itself can take. We're using two nails/hanger combos.