Can anyone tell me how to correct the way the threads are posted?

If that does not work for you look at the top of the page and click on USER CP,
Then on you left UNDER YOUR CONTROL PANEL,scroll down to Settings & Options and look for Edit Options and click on it.Then on that screen scroll down to Thread Display Options .Now look for Thread Display Mode.If it says linear newest first hit the arrow to the right and pick linear oldest first.Scroll to the bottom and click save changes.
Hope this helps.
TXDart