Jeffreys Dart Needs to get that *** up!

What I did worked great, I admit "I got lucky." Maybe you can find someone reworking another A in your area. I had junked out a later Demon/ Duster and too both my original, and the junker spring packs apart, and used the LONGEST springs out of each pack. I think I ended up (trial run) with one more leaf than the originals. They stiffened the rear right up, and "jacked" it just right for me