Joined: Nov 2010
Posts: 6,035
Likes: 119
From: The Garden State
Bikes: 1917 Loomis, 1923 Rudge, 1930 Hercules Renown, 1947 Mclean, 1948 JA Holland, 1955 Hetchins, 1957 Carlton Flyer, 1962 Raleigh Sport, 1978&81 Raleigh Gomp GS', 2010 Raliegh Clubman
Fine working derailleurs, I think. The fragility of the plastic seems to be their weak point. It does seem your adjustment issues stem (pun intended) from the choice of shifter and a ill fitting clamp.
Penance? Go place a vigil candle before your Simplex components.......lest a worse fate befalls your Peugeot