We've been fighting this failing hot water tank for almost a week.  Pilot light won't stay lit, and our "guy" says it's this little white piece that needs replaced.  I learned a few years ago that taking a picture to the hardware store helps explain what we need.

I have 3 followers!  If each of you gets another follower, I'll have 6 . . . then twelve . . . then someday I'll be as popular as Aston Kutcher on Twitter!  Shooting for a million!