I'm still fairly sure just a couple of screws have fallen out. Just get a mirror and a flashlight and it should be fairly evident what has happened. Look at this microfiche on the Ron Ayers site.
http://fiche.ronayers.com/Index.cfm/...ENDER_MODEL_K3
You may want to bookmark this site as it gives you blow ups of everything on the bike.
Probably part #16 or #17 has fallen out. Hope this fixes you up. Good Luck.
:chop: