When I ordered the new springs for my Nambu, I also ordered a new recoil spring for the Luger. I put it in tonite, using a hybrid approach of Thor's instructions, a YouTube video I found, and my own improvisation. My addition to the technique was to temporarily insert a spacer at the bottom of the spring to hold the hook up so I could hook it onto the do-dah that it hooks to - as I didn't have gravity assisting me as in Thor's technique. No underbench to work with.
In any event, it was pretty much a piece of cake compared to the thrash I went through replacing the takedown lever spring!
I had wanted to replace the recoil spring before a planned range trip this Sunday - and as I had broken a thumbnail at work today (Horrors! The humanity!
), I figured tonite was the nite to get this project out of the way!