Last time I went to visit my grandmother, I did a quick tune-up on her 2001 Kirby Ultimate G and one of the things that I did was replace the headlight bulb. Apparently, That particular bulb only lasted one vacuuming. The bulb I installed was a type #921 automotive bulb that I have had great success with in all of my other Kirby's (Diamond Edition and Generation 3) so I don't know why her Ultimate G is eating these bulbs left and right. Any ideas would be greatly appreciated.