Sorry Tony, I did mean Marty Johnson, post 205792. I went to see his reply and got the 404 message. Good post with lots of information about various GT40 configurations and Mario Andretti success.
OK, I figured it out. This has happened before a couple times. I just went to the Forum 18 and looked down the admin list. There it was with the 'Private' symbol showing. Only you, as the originator of the thread, or admin, can change it to private from public or back the other way. You either hit it by mistake or there is, somehow, a glitch involved. I switched it back and it should be fine.
@perrone1 - Ahhh! That makes total sense. I must have accidentally hit that button. In fact, I never even noticed it before and didn't even know it existed or was an option. All is well now! And yes, when you posted the link, it did take me directly to the post. But, outside of the link, and just visiting the page, my post was invisible to the membership and to me. All is good now.