W124 Instrument cluster removal - stuck

[ramonajim]

Need to replace the left turn signal bulb in my 91 300TE 4Matic. Trying to get the instrument cluster out, using the instructions found here: http://www.peachparts.com/Wikka/W124InstCluster.

Went to free the speedo cable as directed, and found mine wasn't connected as shown - it was free, there is no tension (a good 3-4" of play).

I've been able to get the cluster to pull free, but can't move it out more than 1/2", and only one side at a time. Feels very much like it is attached to something in the back, more or less centered on the cluster. Pulling on the cluster is NOT pulling hard enough on the speedo cable to move it.

I pulled the left side AC vent for additional access - basically got nothing more out of that than confirming that I've been pulling hard enough (and cluster is moving enough) to convince myself that the cluster is attached to something, not just 'stuck' in place.

Dropped the knee panel to try and get access to the back of the cluster from the bottom - nope, can't get there from here.

Any suggestions? Ideas? What else do I need to disconnect, and how do I get to it?

Thanks in advance!