My Lazyboy is stuck in the recliner position with the footrest out?

My lazy boy is stuck in the recliner position with the footrest able to come in only about a third of the way. No amount of force on the lever seems able to bring the footrest completely in or bring the chair to the more upright position. I've turned the chair over and haven't been able to determine what part(s) might be frozen or stuck. Any suggestions...or where in the mechanism to look for a 'stuck' point?
Aloha and mahalo for your help