hey guys. I am still a green horn to the lighting industry and have a technical question that i need answered. Yesterday i went to check on one of my customers houses b/c they said they had three pendant lights over their bar go out at one time. they did not see them go out, so they are just asuming they all went out at one time. when i got there i checked my dimmer switch, transformer and bulbs. when we went to pull the bulbs, all three were blue in color and cracked in several spots. the bulbs are the 20watt astro brights. I checked my wattage and it was 13.2 which was a little high, but saw no other signs that something else could have caused the problem. have any of you ever run across something like this before where the bulbs cracked all over and turned blue? i was carefull when installing them not to touch the lamp and leave my oils on them. any help will be gladly accepted. i have since turned the line voltage down to 12.2 volts to see if that helps.