The pilot light on my unit went out until I cleaned the end that lights with a toothbrush.
I basically turned off the gas, took a toothbrush and brushed the excess "white powder" that accumulated on the pilot area. I also too a small straight pin and carefully cleaned out the pipe opening the gas comes out of.
As crazy as that sounds, it works again. I have to do this every winter before I start the unit again.
Yes, I need to get parts too.......
Becky, December 2010