1968 New Yorker passenger-side reclining seat issue

[GOLDMYN]

Hi, My seat appears fine but lifting the lever on the side and the cam does turn but only far enough to hit the lip of the cylinder. Any ideas what's wrong? I appreciate the time Mike

 

[Affe]

May I ask how the back shield was attached to the backrest? I have not found a way to remove this without violence
and would not want to break anything since they sit perfectly now. I am just looking for another build sheet..