I wonder if the collective can help me with this.
An early 80s Clements frame with odd downtube bosses.
I'm struggling to get levers to fit on.
None of the downtube levers I have will fit. I've tried Simplex, Campag, Shimano indexed & friction and I'm kind of stumped. The thread is definitely NOT M5.
Suggestions if anyone has any - keep it clean, please!