Posted by Steve in NJ on Monday, April 13, 2009 at 18:09:33 :
I removed the cylinder in about 2 minutes.
I found the screw, but it turned out to be an Allen set screw. Loosened the set screw and it fell out.
I had access to some other doors and found a few differences. Two had the same Allen screws, two had screws and two had bolts.
Also found differences in the locks and cover plates.
Thanks to all who responded to my post.
Steve in NJ