maximum wattage.? It has 5-globes and we've burned 60 watt bulbs as long as I can recall. In the last couple of years, each time I try and unscrew a bulb, it doesn't budge. Am I using too high of a wattage and the metals are fusing? The fixture does not contain info. re: max wattage. One of the receptors has a brown film/powder on the side - a sign of overheating? The receptors contain the following details: E106195 and Yin Wei and 58T5. Google & Bing searches have yielded no clues on max. wattage. Any ideas?