Sure thing, glad to help, if it does in any way.
I started out in IT as an application support resource, then moved to quality assurance-testing. So I enjoy looking at puzzles like this.
I still see the "alt" tags, by the way:
Est.1961
I don't know if you do, too, or anyone else. It may be, too, that the forum doesn't handle the logic in the link you have. And that may very well be through nothing you've done. It may be that there were changes, such as upgrades, or other changes, to the pages or some other components of the site. And that may have caused an issue, too. Integrating changes into a functioning application is always a little tricky.
I do see the model chassis, though, too.
Hope that helps! Might just have to keep playing with it.