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.