Jim - update to your much appreciated help.  Came back to Alaska with a full double shoulder and got to work.  The slide, with a minor modification, came out rather well.  I did not get a snap set.  Due to the remoteness of my post I made do with what I had.  The holster- thanks to your tutorial- came out better than expected.  I mis-measured something because, while my pistol fits, it is a forced tight squeeze.  Pics of the second attempt to follow.  Thanks, again. 
Mike