Warped seatpost clamp. Bianchi Brava 1987
I picked up a 1987 Bianchi Brava and the guy told me a 27.2 seatpost was too big. I picked up a Japanese 26.6 and had no luck getting it in. I think the clamp is football warped slightly. It's really close to fitting. I'm guessing temperature and oxidation? It's chromoly steel.
Any ideas? Should I try sand paper and PG-13 lubrication or hit up the LBS?