Thanks for all of that advice. I'm going to try the whistle test with another load on the track as suggested. I've got plenty of passenger cars with lights.
I'll alos take a look at those references. I read them at an earlier time but didn't understand the significance of what I was reading. Now that I have four years experience, I'm finding that as I re-read Dr. Tinker's maintenance books, they are much more meaningful. Always seems to be something new to learn, and that's one of the reasons I being in this game.
