My quadrant is worn smooth on my '26. No clicking. I found a replacement quadrant I can rivet on but i'm sure the levers are worn flat too where they touch the old quadrant.
What shape were the bottom of the levers originally? Round or pointed? I can weld them back up and file them to the correct shape I think...
Round (at least the reproductions that I bought were).
Round may be original, but if you weld them up and create a bit of a point, they will hold better and click nicely--just don't over-do it!
Might be easier to file back the pattern in the quadrant while in place instead of replacing it? - lots of disassembly and reriveting needed.
Bending the levers forward may increase the pressure towards the quadrant. Check so the springs at the engine side of the firewall are in good shape.