Customer was complaining about her chandalier bulbs making a sound when she used the dimmer. So I unscrewed the incadescent bulb and it said 57 watt. 120 v. I thought they came in 60, 40, 75, etc. Never seen one like that. I remember reading on here that if you change the bulbs to 130v. it will take care of the noise. Is that correct? Thank you.