Puzzler: stuck action

[A440A@AOL.COM]

>Steinway M,   action will not slide out more then a   
>              couple inches...stuck.
>
>hmmmm.....took me longer then it should have
>          determine cause.

That happened to me when there were too-long screws protruding from the 
keybed, either  from the leg or lyre cams. 
Ed Foote