I'm not sure if this will help you much but here's a pic of the bolt I believe Miles is referring to. It's a rubber grommet that is inserted into the framework then the bolt passes thru it. I could see where it could easily get installed incorrectly if removed.
I'm not sure if you can see it clearly with the front end assembled I just happened to have my front end apart, so here's a pic.
Hope this helps.
Attachment 3712