Derailleur has been fully serviced; disassembled, cleaned, inspected and tested (all good) plus main spring repacked with fresh grease. Campagnolo 4001 Super Record 1s Gen Model. Upgraded sealed bearing 10 point pulleys G. D M make Made in Italy (was upgraded by original owner back in the late 70’s), I was going to replace with Campagnolo pulleys but these are…