I learned some things along the way of my first difficult reassembly.  I didn't have a vice or an RJ takedown tool, but I was able to use what I had and make it work.  I used a rubber eraser for a mechanical pencil to hold the slide open, so that I could remove the barrel pin.  I used a 1/4" mini wrench to assist in inserting the recoil assembly into the slide.  I then had issues moving the slide all the way to the rear of the frame.  I couldn't igure out what to do for the longest time.  After much frustration,  I was able to move the slide by slightly depressing the barrel as I moved it back.  I wish I had a vice and an extra set of hands when inserting the barrel pin, but I didn't.  What worked for me was to place the barrel pin into the hole in the slide.  I then pulled the slide back with my right hand so the back edge of the second slide serration was at the edge of the frame.  While doing this I kept pressue on the pin till it was partially in the hole.  Last I pushed the pin in with an allen wrench.  Patience was key but now I know what to do.