<themaaslands@comcast.net> wrote: Jerry is also correct that the Simplex retro-friction levers were one of the most commonly substituted Campagnolo parts. The other commonly swapped part here in North America were the pulley wheels.
I think some of the credit for the improved shifting from the SLJ/retrofriction combo was down to the shifters, hence their popularity even among otherwise dyed in the wool Campaphiles. Wasn't the usual pulley wheel swap back then to put Suntour pullies on your Campagnolo derailleur? I've seen that one; I've never seen Campagnolo pulleys on another make of RD.
Kurt Sperry
Bellingham WA