Sounds like the shifter ratchet is dead. A very common problem with 10spd when campag switched to cheap vinyl for the ratchet material. I’ve had to replace a veloce set for this reason. I think you can get it repaired if you have the time and willpower.
Sounds like the shifter ratchet is dead. A very common problem with 10spd when campag switched to cheap vinyl for the ratchet material. I’ve had to replace a veloce set for this reason. I think you can get it repaired if you have the time and willpower.