Good luck with it Folkie! That game has been on my want list for years and years now. If you ever decide to cut it loose, let me know. I'd love to give it a good home.
But as others have said, Pinball Resource is your place of all things gottlieb pinball. The ordering process is just a little antiquated, but it keeps the prices low. Give them a call to set up a new account and find out what parts they stock for the game.