Here is a pic of the "pawl" in the down position (you cannot install the barrel with it this way). The brass pointer is pointing to the part I was trying to describe in my original post.
http://smith-wessonforum.com/attachm...1&d=1505703132
In this pic, the brass pointer is pointing to the "pawl cam." Putting downward pressure here fixed the problem and the pawl tipped up so that the barrel could be reinstalled.
http://smith-wessonforum.com/attachm...1&d=1505703157
By the way, sorry for the dirty gun, but I just got back from the range and saw the request for pics. You will have to forgive me.
And as a bonus, here is a pic of the two Model 41 pistols I bought at an estate sale yesterday.
http://smith-wessonforum.com/attachm...1&d=1505703165
Mike