Model D - missing bolts?

[marklive]

My model D has been in storage for 4 months. Now I cannot get the 2 main sections to clip back together. The middle section always touches the floor. Can anyone tell me if I am missing a bolt (or several)? I found one bolt but it doesn't seem to make a difference in any of the 3 holes marked on the attached photo. Do I need another one? Many thanks.

[Cyclist2]

Try the C2 website on service: http://www.concept2.com/us/service/indoorrowers/modeld/

[marklive]

Nothing on the website with enough detail for me to see what bolts I may be missing. I was hoping some kind person would compare a working early model D with my photo and let me know what I'm missing. Thanks!