Thank you for the reply. Yes I looked at the break down of the router and it is the #19clamp bar that fell out. It has holes in it that line up with the lock shaft as its screwed in and also two other shallow holes that line up with I think adjustable screws on the outside? What I didn't do and I have to now try is to lay the router on its side and line up the bar and gear rack and attempt to rotate the elevation knob and hope be able to rotate the unit back up into housing? It doesn't appear to have any other part missing. I just don't have any idea how the two adjustable screws at the locking knob are adjusted?
Thanks again for your reply